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| Kingdom | Animalia
– Animal, animaux, animals |
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| Subkingdom | Bilateria
– triploblasts |
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| Infrakingdom | Protostomia
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| Superphylum | Ecdysozoa
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| Phylum | Arthropoda
– Artrópode, arthropodes, arthropods |
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| Subphylum | Hexapoda
– hexapods |
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| Class | Insecta
– insects, hexapoda, inseto, insectes |
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| Subclass | Pterygota
– insects ailés, winged insects |
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| Infraclass | Neoptera
– modern, wing-folding insects |
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| Superorder | Holometabola
|
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| Order | Coleoptera Linnaeus, 1758
– beetles, coléoptères, besouro |
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| Suborder | Polyphaga Emery, 1886
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| Infraorder | Staphyliniformia Lameere, 1900
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| Superfamily | Staphylinoidea Latreille, 1802
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| Family | Hydraenidae Mulsant, 1844
– minute moss beetles |
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| Subfamily | Hydraeninae Mulsant, 1844
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| Tribe | Hydraenini Mulsant, 1844
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| Genus | Hydraena Kugelann, 1794 |
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Direct Children: |
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| Species |
Hydraena abbasigili Jäch, 1988
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| Species |
Hydraena abdita Orchymont, 1948
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| Species |
Hydraena abyssinica Régimbart, 1905
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| Species |
Hydraena accurata Orchymont, 1948
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| Species |
Hydraena achaica Jäch, 1995
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| Species |
Hydraena acumena Perkins, 2011
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| Species |
Hydraena adelbertensis Perkins, 2011
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| Species |
Hydraena adrastea Orchymont, 1948
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| Species |
Hydraena aethaliensis Breit, 1917
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| Species |
Hydraena affirmata Perkins, 2007
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| Species |
Hydraena affusa Orchymont, 1936
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| Species |
Hydraena africana Kuwert, 1888
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| Species |
Hydraena akameku Perkins, 2011
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| Species |
Hydraena akbesiana Audisio, De Biase and Jäch, 1993
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| Species |
Hydraena albai Sáinz-Cantero, 1993
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| Species |
Hydraena alberti Balfour-Browne, 1950
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| Species |
Hydraena alcantarana Ienistea, 1985
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| Species |
Hydraena algerina Kaddouri, 1992
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| Species |
Hydraena alia Orchymont, 1934
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| Species |
Hydraena aliciae Jäch and Díaz, 2005
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| Species |
Hydraena allomorpha Lagar and Fresneda, 1990
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| Species |
Hydraena alluaudi Régimbart, 1906
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| Species |
Hydraena alpicola Pretner, 1931
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| Species |
Hydraena altamirensis Díaz Pazos and Garrido Gonzalez, 1993
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| Species |
Hydraena altapapua Perkins, 2011
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| Species |
Hydraena alternata Perkins, 1980
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| Species |
Hydraena alterra Perkins, 1980
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| Species |
Hydraena alticola Skale and Jäch, 2008
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| Species |
Hydraena altiphila Perkins, 2011
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| Species |
Hydraena amazonica Perkins, 2011
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| Species |
Hydraena ambiflagellata Zwick, 1977
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| Species |
Hydraena ambigua Ganglbauer, 1901
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| Species |
Hydraena ambiosina Perkins, 2007
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| Species |
Hydraena ambra Perkins, 2011
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| Species |
Hydraena ambripes Perkins, 2011
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| Species |
Hydraena ambroides Perkins, 2011
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| Species |
Hydraena americana Jäch, 1993
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| Species |
Hydraena amidensis Jäch, 1988
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| Species |
Hydraena ampla Perkins, 2011
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| Species |
Hydraena anaphora Perkins, 1980
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| Species |
Hydraena anatolica Janssens, 1963
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| Species |
Hydraena ancylis Perkins, 1980
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| Species |
Hydraena ancyrae Jäch, 1992
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| Species |
Hydraena andalusa Lagar and Fresneda, 1990
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| Species |
Hydraena andreinii Orchymont, 1934
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| Species |
Hydraena angulicollis Notman, 1921
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| Species |
Hydraena angulosa Mulsant, 1844
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| Species |
Hydraena angustata Sturm, 1836
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| Species |
Hydraena anisonycha Perkins, 1980
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| Species |
Hydraena antaria Perkins, 2007
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| Species |
Hydraena antiatlantica Jäch, Aguilera and Hernando, 1998
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| Species |
Hydraena antiochena Jäch, 1988
| |
| Species |
Hydraena apertista Perkins, 2011
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| Species |
Hydraena apexa Perkins, 2011
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| Species |
Hydraena appalachicola Perkins, 1980
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| Species |
Hydraena appetita Perkins, 2007
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| Species |
Hydraena aquila Perkins, 2011
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| Species |
Hydraena arabica Balfour-Browne, 1951
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| Species |
Hydraena arachthi Ferro and Jäch, 2000
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| Species |
Hydraena arcta Perkins, 2007
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| Species |
Hydraena arenicola Perkins, 1980
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| Species |
Hydraena argutipes Perkins, 1980
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| Species |
Hydraena ariana Janssens, 1962
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| Species |
Hydraena arizonica Perkins, 1980
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| Species |
Hydraena armata Reitter, 1880
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| Species |
Hydraena armatura Perkins, 2014
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| Species |
Hydraena armeniaca Janssens, 1968
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| Species |
Hydraena armipalpis Jäch and Díaz, 2000
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| Species |
Hydraena armipes Rey, 1886
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| Species |
Hydraena aroensis (Ferro, 1991)
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| Species |
Hydraena arunensis Skale and Jäch in Jäch and Skale, 2009
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| Species |
Hydraena ascensa Perkins, 2007
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| Species |
Hydraena assimilis Rey, 1885
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| Species |
Hydraena ateneo Freitag, 2013
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| Species |
Hydraena athertonica Perkins, 2007
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| Species |
Hydraena atrata Desbrochers des Loges, 1891
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| Species |
Hydraena atroscintilla Perkins, 2011
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| Species |
Hydraena attaleiae Ferro, 1984
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| Species |
Hydraena audisioi Jäch, 1992
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| Species |
Hydraena aulaarta Perkins, 2011
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| Species |
Hydraena aurita Jäch, 1988
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| Species |
Hydraena australica Zwick, 1977
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| Species |
Hydraena australula Perkins, 2007
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| Species |
Hydraena austrobesa Perkins, 2011
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| Species |
Hydraena avuncula Jäch, 1988
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| Species |
Hydraena bacchusi Perkins, 2011
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| Species |
Hydraena bactriana Janssens, 1962
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| Species |
Hydraena bakriensis Skale and Jäch, 2011
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| Species |
Hydraena balearica Orchymont, 1930
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| Species |
Hydraena balfourbrownei Bameul, 1986
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| Species |
Hydraena balkei Perkins, 2011
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| Species |
Hydraena balli Orchymont, 1940
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| Species |
Hydraena barbipes Zwick, 1977
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| Species |
Hydraena barricula Perkins, 1980
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| Species |
Hydraena barrosi Orchymont, 1934
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| Species |
Hydraena bedeli Berthélemy, 1992
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| Species |
Hydraena belgica Orchymont, 1930
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| Species |
Hydraena beniensis Perkins, 2011
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| Species |
Hydraena benjaminus Jäch and Díaz, 2006
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| Species |
Hydraena bensae Ganglbauer, 1901
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| Species |
Hydraena bergeri (Janssens, 1972)
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| Species |
Hydraena berthelemyana Jäch, Díaz and Dia in Jäch, Dia and Díaz, 2006
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| Species |
Hydraena berytus Jäch, 1986
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| Species |
Hydraena beyarslani Jäch, 1988
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| Species |
Hydraena bicarina Perkins, 2014
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| Species |
Hydraena bicarinova Perkins, 2011
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| Species |
Hydraena bicolorata Jäch, 1997
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| Species |
Hydraena bicuspidata Ganglbauer, 1901
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| Species |
Hydraena bidefensa Perkins, 2007
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| Species |
Hydraena bifunda Perkins, 2011
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| Species |
Hydraena bihamata Champion, 1920
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| Species |
Hydraena biimpressa Perkins, 2007
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| Species |
Hydraena billi Zwick, 1977
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| Species |
Hydraena bilobata Jäch and Díaz, 1998
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| Species |
Hydraena biltoni Jäch and Díaz, 2012
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| Species |
Hydraena bimagua Jäch, 1986
| |
| Species |
Hydraena birendra Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena biseptosa Perkins, 2014
| |
| Species |
Hydraena bispinosa Pu, 1951
| |
| Species |
Hydraena bisulcata Rey, 1884
| |
| Species |
Hydraena bitruncata Orchymont, 1934
| |
| Species |
Hydraena bituberculata Perkins, 1980
| |
| Species |
Hydraena biundulata Perkins, 2011
| |
| Species |
Hydraena blackburni Zaitzev, 1908
| |
| Species |
Hydraena bodemeyeri Jäch and Díaz, 2001
| |
| Species |
Hydraena boetcheri Orchymont, 1932
| |
| Species |
Hydraena bolivari Orchymont, 1936
| |
| Species |
Hydraena boliviana Perkins, 2011
| |
| Species |
Hydraena bononiensis Binaghi, 1960
| |
| Species |
Hydraena borbonica Fairmaire, 1898
| |
| Species |
Hydraena bosnica Apfelbeck, 1909
| |
| Species |
Hydraena brachymera Orchymont, 1936
| |
| Species |
Hydraena bractea Perkins, 1980
| |
| Species |
Hydraena bractoides Perkins, 1980
| |
| Species |
Hydraena brahmin Perkins, 2011
| |
| Species |
Hydraena breedlovei Perkins, 1980
| |
| Species |
Hydraena brevis Sharp, 1882
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| Species |
Hydraena britteni Joy, 1907
| |
| Species |
Hydraena brittoni Zwick, 1977
| |
| Species |
Hydraena bromleyae Jäch, 1986
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| Species |
Hydraena browni Perkins, 1980
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| Species |
Hydraena bubulla Perkins, 2011
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| Species |
Hydraena bulgarica Breit, 1916
| |
| Species |
Hydraena buloba Perkins, 2011
| |
| Species |
Hydraena buquintana Perkins, 2011
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| Species |
Hydraena buscintilla Perkins, 2011
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| Species |
Hydraena busuanga Freitag and Jäch, 2007
| |
| Species |
Hydraena calcarifera Janssens, 1959
| |
| Species |
Hydraena californica Perkins, 1980
| |
| Species |
Hydraena campbelli Perkins, 1980
| |
| Species |
Hydraena canakcioglui Janssens, 1965
| |
| Species |
Hydraena canticacollis Perkins, 1980
| |
| Species |
Hydraena capacis Perkins, 2007
| |
| Species |
Hydraena capensis Perkins, 2014
| |
| Species |
Hydraena capetribensis Perkins, 2007
| |
| Species |
Hydraena cappadocica Jäch, 1988
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| Species |
Hydraena caprivica Perkins, 2014
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| Species |
Hydraena capta Orchymont, 1936
| |
| Species |
Hydraena carbonaria Kiesenwetter, 1849
| |
| Species |
Hydraena carica Jäch, 1988
| |
| Species |
Hydraena carinocisiva Perkins, 2011
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| Species |
Hydraena carinulata Rey, 1886
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| Species |
Hydraena carmellita Perkins, 2011
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| Species |
Hydraena carniolica Pretner, 1970
| |
| Species |
Hydraena castanea Deane, 1937
| |
| Species |
Hydraena castanescens Freitag and Jäch, 2007
| |
| Species |
Hydraena cata Orchymont, 1936
| |
| Species |
Hydraena catalonica Fresneda, Aguilera and Hernando, 1994
| |
| Species |
Hydraena catherinae Bameul and Jäch, 2001
| |
| Species |
Hydraena caucasica Kuwert, 1888
| |
| Species |
Hydraena cavifrons Perkins, 2011
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| Species |
Hydraena cephalleniaca Jäch, 1985
| |
| Species |
Hydraena cervisophila Jäch, 1992
| |
| Species |
Hydraena challeti Perkins, 2011
| |
| Species |
Hydraena cheesmanae Perkins, 2011
| |
| Species |
Hydraena chenae Pu, 1951
| |
| Species |
Hydraena chersonesica Jäch, Díaz and Przewozny, 2007
| |
| Species |
Hydraena cherylbarrae Perkins, 2011
| |
| Species |
Hydraena chiapa Perkins, 1980
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| Species |
Hydraena chiesai Janssens, 1965
| |
| Species |
Hydraena chifengi Jäch and Díaz, 1999
| |
| Species |
Hydraena chobauti Guillebeau, 1896
| |
| Species |
Hydraena christinae Audisio, De Biase and Jäch, 1996
| |
| Species |
Hydraena christoferi Jäch and Díaz, 2005
| |
| Species |
Hydraena ciliciensis Jäch, 1988
| |
| Species |
Hydraena circulata Perkins, 1980
| |
| Species |
Hydraena cirrata Champion, 1920
| |
| Species |
Hydraena clarinis Perkins, 2011
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| Species |
Hydraena claudia Freitag and Jäch, 2007
| |
| Species |
Hydraena clavicula Perkins, 2014
| |
| Species |
Hydraena clavigera Zwick, 1977
| |
| Species |
Hydraena clemens Jäch and Díaz, 2006
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| Species |
Hydraena clinodorsa Perkins, 2011
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| Species |
Hydraena clystera Perkins, 2011
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| Species |
Hydraena cochabamba Perkins, 2011
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| Species |
Hydraena colchica Janssens, 1963
| |
| Species |
Hydraena colombiana Perkins, 1980
| |
| Species |
Hydraena colorata Perkins, 2011
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| Species |
Hydraena colymba Perkins, 1980
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| Species |
Hydraena compressipilis Jäch and Díaz, 1998
| |
| Species |
Hydraena concepcionica Perkins, 2011
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| Species |
Hydraena concinna Orchymont, 1932
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| Species |
Hydraena confluenta Perkins, 2011
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| Species |
Hydraena confusa Pu, 1951
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| Species |
Hydraena connexa Orchymont, 1932
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| Species |
Hydraena converga Perkins, 2007
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| Species |
Hydraena coomani Orchymont, 1932
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| Species |
Hydraena cooperi Balfour-Browne, 1954
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| Species |
Hydraena cooperoides Perkins, 2014
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| Species |
Hydraena copulata Perkins, 2011
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| Species |
Hydraena cordata Schaufuss, 1883
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| Species |
Hydraena cordiformis Jäch and Díaz, 2000
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| Species |
Hydraena cordispina Perkins, 2011
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| Species |
Hydraena corinna Orchymont, 1936
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| Species |
Hydraena cornelli Jäch and Díaz, 1998
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| Species |
Hydraena corrugis Orchymont, 1934
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| Species |
Hydraena coryleti Jäch, 1992
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| Species |
Hydraena costiniceps Perkins, 1980
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| Species |
Hydraena crepidoptera Jäch, 1992
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| Species |
Hydraena cristatigena Jäch and Díaz, 2000
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| Species |
Hydraena croatica Kuwert, 1888
| |
| Species |
Hydraena cryptostoma Jäch, 1992
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| Species |
Hydraena crystallina Perkins, 1980
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| Species |
Hydraena cubista Perkins, 2007
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| Species |
Hydraena cultrata Perkins, 2007
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| Species |
Hydraena cunicula Perkins, 2011
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| Species |
Hydraena cunninghamensis Perkins, 2007
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| Species |
Hydraena curta Kiesenwetter, 1849
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| Species |
Hydraena curtipalpis Jäch and Díaz, 1998
| |
| Species |
Hydraena curvipes Jäch and Díaz, 2012
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| Species |
Hydraena curvosa Perkins, 2011
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| Species |
Hydraena cuspidicollis Perkins, 1980
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| Species |
Hydraena cyclops Jäch and Díaz, 2000
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| Species |
Hydraena cygnus Zwick, 1977
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| Species |
Hydraena czernohorskyi Müller, 1911
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| Species |
Hydraena d-concava Perkins, 2011
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| Species |
Hydraena d-destina Perkins, 1980
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| Species |
Hydraena dalmatina Ganglbauer, 1901
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| Species |
Hydraena damascena Pic, 1910
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| Species |
Hydraena dariensis Perkins, 2011
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| Species |
Hydraena darwini Perkins, 2007
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| Species |
Hydraena debeckeri (Janssens, 1972)
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| Species |
Hydraena decepta Perkins, 2011
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| Species |
Hydraena decipiens Zwick, 1977
| |
| Species |
Hydraena decolor Sainte-Claire Deville, 1903
| |
| Species |
Hydraena decui Spangler, 1980
| |
| Species |
Hydraena delia Balfour-Browne, 1978
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| Species |
Hydraena deliquesca Perkins, 2007
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| Species |
Hydraena delvasi Delgado and Collantes, 1996
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| Species |
Hydraena densa Fauvel, 1883
| |
| Species |
Hydraena dentipalpis Reitter, 1888
| |
| Species |
Hydraena dentipes Germar, 1824
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| Species |
Hydraena devillei Ganglbauer, 1901
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| Species |
Hydraena devincta Orchymont, 1940
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| Species |
Hydraena diadema Perkins, 2011
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| Species |
Hydraena diazi Trizzino, Jäch and Ribera in Trizzino, Jäch, Audisio and Rivera, 2011
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| Species |
Hydraena diffusa Perkins, 2011
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| Species |
Hydraena dilutipes Fairmaire, 1898
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| Species |
Hydraena dimorpha Orchymont, 1922
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| Species |
Hydraena dinosaurophila Jäch, 1994
| |
| Species |
Hydraena discicollis Fairmaire, 1898
| |
| Species |
Hydraena discreta Ganglbauer, 1904
| |
| Species |
Hydraena disparamera Perkins, 2007
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| Species |
Hydraena dochula Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena dolichogaster Janssens, 1965
| |
| Species |
Hydraena dorrigoensis Perkins, 2007
| |
| Species |
Hydraena draconisaurati Jäch and Díaz, 2005
| |
| Species |
Hydraena dudgeoni Perkins, 2011
| |
| Species |
Hydraena duodecimata Perkins, 2014
| |
| Species |
Hydraena duohamata Perkins, 2011
| |
| Species |
Hydraena ebriimadli Jäch, 1988
| |
| Species |
Hydraena ecuadormica Perkins, 2011
| |
| Species |
Hydraena egoni Jäch, 1986
| |
| Species |
Hydraena eichleri Orchymont, 1937
| |
| Species |
Hydraena einsteini Perkins, 2011
| |
| Species |
Hydraena elephanta Perkins, 2014
| |
| Species |
Hydraena elisabethae Jäch, 1992
| |
| Species |
Hydraena eliya Jäch, 1982
| |
| Species |
Hydraena emarginata Rey, 1885
| |
| Species |
Hydraena emineae Jäch and Kasapoglu, 2006
| |
| Species |
Hydraena epeirosi Ferro, 1985
| |
| Species |
Hydraena errina Orchymont, 1948
| |
| Species |
Hydraena erythraea Régimbart, 1905
| |
| Species |
Hydraena eryx Orchymont, 1948
| |
| Species |
Hydraena esquinita Brojer and Jäch, 2011
| |
| Species |
Hydraena essentia Perkins, 2011
| |
| Species |
Hydraena eucnemis Janssens, 1970
| |
| Species |
Hydraena evanescens Rey, 1884
| |
| Species |
Hydraena evansi Balfour-Browne, 1945
| |
| Species |
Hydraena exarata Kiesenwetter, 1866
| |
| Species |
Hydraena exasperata Orchymont, 1935
| |
| Species |
Hydraena excisa Kiesenwetter, 1849
| |
| Species |
Hydraena exhalista Perkins, 2011
| |
| Species |
Hydraena exilipes Perkins, 1980
| |
| Species |
Hydraena expedita Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena explanata Pic, 1905
| |
| Species |
Hydraena extorris Zwick, 1977
| |
| Species |
Hydraena falcata Jäch, 1992
| |
| Species |
Hydraena farsensis Skale and Jäch, 2011
| |
| Species |
Hydraena fasciata Perkins, 2011
| |
| Species |
Hydraena fascinata Perkins, 2011
| |
| Species |
Hydraena fasciola Perkins, 2011
| |
| Species |
Hydraena fasciolata Perkins, 2011
| |
| Species |
Hydraena fasciopaca Perkins, 2011
| |
| Species |
Hydraena favulosa Perkins, 2014
| |
| Species |
Hydraena fenestella Perkins, 2011
| |
| Species |
Hydraena ferethula Perkins, 2007
| |
| Species |
Hydraena feryi Skale and Jäch, 2011
| |
| Species |
Hydraena feuerborni Orchymont, 1932
| |
| Species |
Hydraena fijiensis Balfour-Browne, 1945
| |
| Species |
Hydraena filum Sahlberg, 1908
| |
| Species |
Hydraena finita Orchymont, 1943
| |
| Species |
Hydraena finki Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena finniganensis Perkins, 2007
| |
| Species |
Hydraena fiorii Porta, 1899
| |
| Species |
Hydraena fischeri Schönmann, 1991
| |
| Species |
Hydraena flagella Perkins, 2011
| |
| Species |
Hydraena fluvicola (Perkins, 1980)
| |
| Species |
Hydraena foliobba Perkins, 2011
| |
| Species |
Hydraena fontana Orchymont, 1932
| |
| Species |
Hydraena fontiscarsavii (Jäch, 1988)
| |
| Species |
Hydraena formosapala Perkins, 2011
| |
| Species |
Hydraena formula Orchymont, 1932
| |
| Species |
Hydraena forticollis Perkins, 2007
| |
| Species |
Hydraena fosterorum Trizzino, Jäch and Ribera in Trizzino, Jäch, Audisio and Rivera, 2011
| |
| Species |
Hydraena franklyni Deler-Hernández and Delgado, 2012
| |
| Species |
Hydraena freitagi Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena frenzeli Skale and Jäch, 2008
| |
| Species |
Hydraena fritzi Jäch, 1992
| |
| Species |
Hydraena frondsicola (Perkins, 1980)
| |
| Species |
Hydraena funda Perkins, 2011
| |
| Species |
Hydraena fundacta Perkins, 2011
| |
| Species |
Hydraena fundaequalis Perkins, 2007
| |
| Species |
Hydraena fundapta Perkins, 2011
| |
| Species |
Hydraena fundarca Perkins, 2011
| |
| Species |
Hydraena fundata Perkins, 2007
| |
| Species |
Hydraena fundextra Perkins, 2011
| |
| Species |
Hydraena furthi Jäch, 1982
| |
| Species |
Hydraena gaditana Lagar and Fresneda, 1990
| |
| Species |
Hydraena galatica Janssens, 1970
| |
| Species |
Hydraena galea Perkins, 2011
| |
| Species |
Hydraena gavarrensis Jäch, Díaz and Martinoy, 2005
| |
| Species |
Hydraena geminya Perkins, 1980
| |
| Species |
Hydraena genumorpha Perkins, 2014
| |
| Species |
Hydraena georgiadesi Orchymont, 1931
| |
| Species |
Hydraena geraldneuhauseri Jäch and Díaz, 2006
| |
| Species |
Hydraena germaini Orchymont, 1923
| |
| Species |
Hydraena glassmani Jäch, 1986
| |
| Species |
Hydraena gnatella Orchymont, 1945
| |
| Species |
Hydraena gnatelloides Orchymont, 1945
| |
| Species |
Hydraena gracilidelphis Trizzino, Valladares, Garrido and Audisio, 2012
| |
| Species |
Hydraena gracilis Germar, 1824
| |
| Species |
Hydraena graciloides (Jäch, 1988)
| |
| Species |
Hydraena grandis Reitter, 1885
| |
| Species |
Hydraena graphica Orchymont, 1931
| |
| Species |
Hydraena grata Orchymont, 1944
| |
| Species |
Hydraena gregalis Orchymont, 1944
| |
| Species |
Hydraena gressa Orchymont, 1944
| |
| Species |
Hydraena griphus Orchymont, 1944
| |
| Species |
Hydraena grouvellei Orchymont, 1923
| |
| Species |
Hydraena grueberi Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena guadelupensis Orchymont, 1923
| |
| Species |
Hydraena guangxiensis Jäch and Díaz, 2005
| |
| Species |
Hydraena guatemala Perkins, 1980
| |
| Species |
Hydraena guentheri Jäch, 1992
| |
| Species |
Hydraena guilin Jäch and Díaz, 2005
| |
| Species |
Hydraena gynaephila Jäch, 1997
| |
| Species |
Hydraena habitiva Perkins, 2014
| |
| Species |
Hydraena hainzi Jäch, 1988
| |
| Species |
Hydraena haitensis Perkins, 1980
| |
| Species |
Hydraena hajeki Skale and Jäch, 2011
| |
| Species |
Hydraena hamifera Zwick, 1977
| |
| Species |
Hydraena hansreuteri Jäch and Díaz, 2005
| |
| Species |
Hydraena hayashii Jäch and Díaz, 2012
| |
| Species |
Hydraena helena Orchymont, 1929
| |
| Species |
Hydraena hendrichi Jäch, Díaz and Skale, 2013
| |
| Species |
Hydraena hernandoi Fresneda and Lagar, 1990
| |
| Species |
Hydraena herzogestella Perkins, 2011
| |
| Species |
Hydraena heterogyna Bedel, 1898
| |
| Species |
Hydraena hiekei Jäch, 1992
| |
| Species |
Hydraena hillaryi Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena hintoni Perkins, 2011
| |
| Species |
Hydraena hispanica Ganglbauer, 1901
| |
| Species |
Hydraena holdhausi Pretner, 1929
| |
| Species |
Hydraena hornabrooki Perkins, 2011
| |
| Species |
Hydraena hortensis Jäch and Díaz, 2000
| |
| Species |
Hydraena hosiwergi Freitag and Jäch, 2007
| |
| Species |
Hydraena hosseinieorum Bilton and Jäch, 1998
| |
| Species |
Hydraena huangshanensis Jäch and Díaz, 2005
| |
| Species |
Hydraena huitongensis Jäch and Díaz, 2005
| |
| Species |
Hydraena humanica Perkins, 2014
| |
| Species |
Hydraena hunanensis Pu, 1951
| |
| Species |
Hydraena hungarica Rey, 1884
| |
| Species |
Hydraena huonica Perkins, 2011
| |
| Species |
Hydraena hyalina Perkins, 1980
| |
| Species |
Hydraena hynesi Zwick, 1977
| |
| Species |
Hydraena hypipamee Perkins, 2007
| |
| Species |
Hydraena ibalimi Perkins, 2011
| |
| Species |
Hydraena iberica Orchymont, 1936
| |
| Species |
Hydraena idema Perkins, 2011
| |
| Species |
Hydraena iheya Jäch and Díaz, 1999
| |
| Species |
Hydraena ilamensis Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena ilica Jäch, 1994
| |
| Species |
Hydraena imbria Jäch and Díaz, 2001
| |
| Species |
Hydraena impala Perkins, 2011
| |
| Species |
Hydraena imperatrix Kniz, 1919
| |
| Species |
Hydraena impercepta Zwick, 1977
| |
| Species |
Hydraena impressicollis Fairmaire, 1898
| |
| Species |
Hydraena inancala Perkins, 2007
| |
| Species |
Hydraena inapicipalpis Pic, 1918
| |
| Species |
Hydraena incisiva Perkins, 2011
| |
| Species |
Hydraena incista Perkins, 2011
| |
| Species |
Hydraena incurva Orchymont, 1932
| |
| Species |
Hydraena indiana Jäch, 1994
| |
| Species |
Hydraena indica Orchymont, 1920
| |
| Species |
Hydraena infoveola Perkins, 2011
| |
| Species |
Hydraena ingens (Perkins, 1980)
| |
| Species |
Hydraena inhalista Perkins, 2011
| |
| Species |
Hydraena injectiva Perkins, 2014
| |
| Species |
Hydraena innuda Perkins, 2007
| |
| Species |
Hydraena inopinata Jäch and Díaz, 1998
| |
| Species |
Hydraena inplacopaca Perkins, 2011
| |
| Species |
Hydraena insandalia Perkins, 2011
| |
| Species |
Hydraena insita Orchymont, 1932
| |
| Species |
Hydraena insolita Orchymont, 1932
| |
| Species |
Hydraena insularis Orchymont, 1945
| |
| Species |
Hydraena integra Pretner, 1931
| |
| Species |
Hydraena intensa Perkins, 2011
| |
| Species |
Hydraena intermedia Rosenhauer, 1847
| |
| Species |
Hydraena intraangulata Perkins, 2007
| |
| Species |
Hydraena inusta Orchymont, 1932
| |
| Species |
Hydraena invicta Perkins, 2007
| |
| Species |
Hydraena iriomotensis Jäch and Díaz, 1999
| |
| Species |
Hydraena isabelae Castro and Herrera, 2001
| |
| Species |
Hydraena isolinae Jäch and Díaz, 1998
| |
| Species |
Hydraena ispirensis Kasapoglu, Jäch and Skale, 2010
| |
| Species |
Hydraena iterata Orchymont, 1948
| |
| Species |
Hydraena jacobsoni Orchymont, 1932
| |
| Species |
Hydraena jaechiana (Audisio and De Biase, 1990)
| |
| Species |
Hydraena jaegeri Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena jailensis Breit, 1917
| |
| Species |
Hydraena janczyki Jäch, 1992
| |
| Species |
Hydraena janeceki Jäch, 1987
| |
| Species |
Hydraena janssensi Nilsson, 2001
| |
| Species |
Hydraena jengi Jäch and Díaz, 1998
| |
| Species |
Hydraena jilanzhui Jäch and Díaz, 2005
| |
| Species |
Hydraena jivaro Perkins, 1980
| |
| Species |
Hydraena johncoltranei Perkins, 2011
| |
| Species |
Hydraena jubilata Perkins, 2011
| |
| Species |
Hydraena kadowakii Jäch and Díaz, 2012
| |
| Species |
Hydraena kakadu Perkins, 2007
| |
| Species |
Hydraena kamitei Jäch and Díaz, 2012
| |
| Species |
Hydraena karinkukolae Jäch, 1989
| |
| Species |
Hydraena karmai Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena kasyi Jäch, 1992
| |
| Species |
Hydraena kaufmanni Ganglbauer, 1901
| |
| Species |
Hydraena kellymilleri Perkins, 2011
| |
| Species |
Hydraena khnzoriani Janssens, 1968
| |
| Species |
Hydraena kilimandjarensis Régimbart, 1906
| |
| Species |
Hydraena kitayamai Jäch and Díaz, 2012
| |
| Species |
Hydraena knischi Orchymont, 1928
| |
| Species |
Hydraena kocheri Berthélemy, 1992
| |
| Species |
Hydraena kodadai Freitag and Jäch, 2007
| |
| Species |
Hydraena koje Perkins, 2011
| |
| Species |
Hydraena koma Perkins, 2011
| |
| Species |
Hydraena krasnodarensis Jäch and Díaz, 2006
| |
| Species |
Hydraena kroumiriana Kaddouri, 1992
| |
| Species |
Hydraena kucinici Micetic Stankovic and Jäch, 2012
| |
| Species |
Hydraena kuehnelti Jäch, 1989
| |
| Species |
Hydraena kurdistanica Jäch, 1988
| |
| Species |
Hydraena kwangsiensis Pu, 1951
| |
| Species |
Hydraena labropaca Perkins, 2011
| |
| Species |
Hydraena lagamba Brojer and Jäch, 2011
| |
| Species |
Hydraena lapidicola Kiesenwetter, 1849
| |
| Species |
Hydraena lapissectilis Jäch, 1992
| |
| Species |
Hydraena larissae Jäch and Díaz, 2000
| |
| Species |
Hydraena larsoni Perkins, 2007
| |
| Species |
Hydraena lascrucensis Brojer and Jäch, 2011
| |
| Species |
Hydraena lassulipes Perkins, 2011
| |
| Species |
Hydraena latebricola Jäch, 1986
| |
| Species |
Hydraena latisoror Perkins, 2007
| |
| Species |
Hydraena lazica Janssens, 1963
| |
| Species |
Hydraena leechi Perkins, 1980
| |
| Species |
Hydraena leei Jäch and Díaz, 1998
| |
| Species |
Hydraena legorskyi Jäch and Brojer, 2012
| |
| Species |
Hydraena lehmanni Jäch and Díaz, 2005
| |
| Species |
Hydraena leonhardi Breit, 1916
| |
| Species |
Hydraena leprieuri Sainte-Claire Deville, 1905
| |
| Species |
Hydraena levantina Sahlberg, 1908
| |
| Species |
Hydraena ligulipes Jäch, 1988
| |
| Species |
Hydraena lilianae Perkins, 2011
| |
| Species |
Hydraena limbobesa Perkins, 2011
| |
| Species |
Hydraena limpidicollis Perkins, 1980
| |
| Species |
Hydraena liriope Orchymont, 1943
| |
| Species |
Hydraena longicollis Sharp, 1882
| |
| Species |
Hydraena loripes Perkins, 2011
| |
| Species |
Hydraena lotti Bilton, 2013
| |
| Species |
Hydraena lucasi Lagar, 1984
| |
| Species |
Hydraena lucernae Zwick, 1977
| |
| Species |
Hydraena ludovicae Orchymont, 1931
| |
| Species |
Hydraena luminicollis Perkins, 2007
| |
| Species |
Hydraena luridipennis MacLeay, 1873
| |
| Species |
Hydraena lusitana (Berthélemy in Berthélemy and Whytton Da Terra, 1977)
| |
| Species |
Hydraena lycia Jäch, 1988
| |
| Species |
Hydraena macedonica Orchymont, 1931
| |
| Species |
Hydraena maculicollis Champion, 1920
| |
| Species |
Hydraena maculopala Perkins, 2011
| |
| Species |
Hydraena madronensis Castor, García and Ferreras, 2000
| |
| Species |
Hydraena magna Pu, 1951
| |
| Species |
Hydraena magnessa Jäch, 1997
| |
| Species |
Hydraena magnetica Zwick, 1977
| |
| Species |
Hydraena mahensis Scott, 1913
| |
| Species |
Hydraena malagricola Jäch and Díaz, 2012
| |
| Species |
Hydraena malickyi Jäch, 1989
| |
| Species |
Hydraena malkini Perkins, 1980
| |
| Species |
Hydraena manabica Perkins, 2011
| |
| Species |
Hydraena manaslu Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena manfredjaechi Delgado and Soler, 1991
| |
| Species |
Hydraena manguao Freitag and Jäch, 2007
| |
| Species |
Hydraena manulea Perkins, 2011
| |
| Species |
Hydraena manuloides Perkins, 2011
| |
| Species |
Hydraena marawaka Perkins, 2011
| |
| Species |
Hydraena marcosae Aguilera, Hernando and Ribera, 1997
| |
| Species |
Hydraena marginicollis Kiesenwetter, 1849
| |
| Species |
Hydraena mariannae Jäch, 1992
| |
| Species |
Hydraena marinae Castro, 2003
| |
| Species |
Hydraena martensi Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena martinschoepfi Jäch and Díaz, 2005
| |
| Species |
Hydraena masatakai Jäch and Díaz, 2003
| |
| Species |
Hydraena maureenae Perkins, 1980
| |
| Species |
Hydraena mauriciogarciai Perkins, 2011
| |
| Species |
Hydraena mazamitla Perkins, 1980
| |
| Species |
Hydraena mecai Millán and Aguilera, 2000
| |
| Species |
Hydraena melas Dalla Torre, 1877
| |
| Species |
Hydraena mercuriala Perkins, 2011
| |
| Species |
Hydraena meschniggi Pretner, 1929
| |
| Species |
Hydraena metzeni Perkins, 2007
| |
| Species |
Hydraena mexicana Perkins, 1980
| |
| Species |
Hydraena mianminica Perkins, 2011
| |
| Species |
Hydraena michaelbalkei Jäch, Díaz and Skale, 2013
| |
| Species |
Hydraena mignymixys Perkins, 1980
| |
| Species |
Hydraena millerorum Perkins, 2007
| |
| Species |
Hydraena miniretia Perkins, 2007
| |
| Species |
Hydraena mintrita Perkins, 2011
| |
| Species |
Hydraena mitchellensis Perkins, 2007
| |
| Species |
Hydraena miyatakei Satô, 1959
| |
| Species |
Hydraena modili Jäch, 1988
| |
| Species |
Hydraena monikae Jäch and Díaz, 2000
| |
| Species |
Hydraena monscassius Jäch, 1988
| |
| Species |
Hydraena monstruosipes Ferro, 1986
| |
| Species |
Hydraena monteithi Perkins, 2007
| |
| Species |
Hydraena morio Kiesenwetter, 1849
| |
| Species |
Hydraena motzfeldi Skale and Jäch, 2011
| |
| Species |
Hydraena mouzaiensis Sainte-Claire Deville, 1909
| |
| Species |
Hydraena mpumalanga Perkins, 2014
| |
| Species |
Hydraena muelleri Pretner, 1931
| |
| Species |
Hydraena muezziginea Jäch, 1988
| |
| Species |
Hydraena multiloba Perkins, 2011
| |
| Species |
Hydraena multimurata Perkins, 2014
| |
| Species |
Hydraena multispina Perkins, 2011
| |
| Species |
Hydraena mylasae Jäch, 1992
| |
| Species |
Hydraena namibiensis Perkins, 2014
| |
| Species |
Hydraena nanocolorata Perkins, 2011
| |
| Species |
Hydraena nanopala Perkins, 2011
| |
| Species |
Hydraena nanoscintilla Perkins, 2011
| |
| Species |
Hydraena natiforma Perkins, 2014
| |
| Species |
Hydraena neblina Perkins, 2011
| |
| Species |
Hydraena nelsonmandelai Makhan, 2008
| |
| Species |
Hydraena neoaccurata Perkins, 2014
| |
| Species |
Hydraena nevermanni Perkins, 1980
| |
| Species |
Hydraena newtoni Perkins, 1980
| |
| Species |
Hydraena nielshaggei Freitag and Jäch, 2007
| |
| Species |
Hydraena nigra Hatch, 1965
| |
| Species |
Hydraena nigrita Germar, 1824
| |
| Species |
Hydraena nike Jäch, 1995
| |
| Species |
Hydraena nilguenae (Jäch, 1988)
| |
| Species |
Hydraena nitidimenta Perkins, 2011
| |
| Species |
Hydraena nivalis Jäch, 1992
| |
| Species |
Hydraena nomenipes Perkins, 2014
| |
| Species |
Hydraena notsui Satô, 1978
| |
| Species |
Hydraena novacula Perkins, 2011
| |
| Species |
Hydraena numidica Sainte-Claire Deville, 1905
| |
| Species |
Hydraena nurabadensis Skale and Jäch, 2011
| |
| Species |
Hydraena nuratauensis Jäch, 1994
| |
| Species |
Hydraena oaxaca Perkins, 1980
| |
| Species |
Hydraena oblio Perkins, 1980
| |
| Species |
Hydraena occidentalis Perkins, 1980
| |
| Species |
Hydraena occitana (Audisio and De Biase, 1995)
| |
| Species |
Hydraena okapa Perkins, 2011
| |
| Species |
Hydraena okinawensis Jäch and Díaz, 1999
| |
| Species |
Hydraena olidipastoris Jäch, 1988
| |
| Species |
Hydraena ollopa Perkins, 2011
| |
| Species |
Hydraena optica Jäch and Díaz, 2012
| |
| Species |
Hydraena orchis Jäch and Díaz, 1998
| |
| Species |
Hydraena orcula Perkins, 1980
| |
| Species |
Hydraena ordishi Delgado and Palma, 1997
| |
| Species |
Hydraena orientalis Breit, 1916
| |
| Species |
Hydraena ortali Jäch, 1986
| |
| Species |
Hydraena orthosia Jäch, Díaz and Dia in Jäch, Dia and Díaz, 2006
| |
| Species |
Hydraena otiarca Perkins, 2011
| |
| Species |
Hydraena ovata Janssens, 1961
| |
| Species |
Hydraena owenobesa Perkins, 2011
| |
| Species |
Hydraena oxiana Janssens, 1974
| |
| Species |
Hydraena ozarkensis Perkins, 1980
| |
| Species |
Hydraena pachyptera Apfelbeck, 1909
| |
| Species |
Hydraena pacifica Perkins, 1980
| |
| Species |
Hydraena pacificica Perkins, 2011
| |
| Species |
Hydraena paeminosa Perkins, 1980
| |
| Species |
Hydraena pagaluensis Hernando and Ribera, 2001
| |
| Species |
Hydraena paganettii Ganglbauer, 1901
| |
| Species |
Hydraena pajarita Brojer and Jäch, 2011
| |
| Species |
Hydraena pakistanica Jäch, 1992
| |
| Species |
Hydraena pala Perkins, 2011
| |
| Species |
Hydraena palamita Perkins, 2011
| |
| Species |
Hydraena palawanensis Freitag and Jäch, 2007
| |
| Species |
Hydraena pallidula Sainte-Claire Deville, 1909
| |
| Species |
Hydraena palustris Erichson, 1837
| |
| Species |
Hydraena pamirica Jäch, 1992
| |
| Species |
Hydraena pamphylia Jäch and Díaz, 2001
| |
| Species |
Hydraena pangaei Jäch, 1992
| |
| Species |
Hydraena pantanalensis Perkins, 2011
| |
| Species |
Hydraena paraguayensis Janssens, 1972
| |
| Species |
Hydraena parciplumea Perkins, 2007
| |
| Species |
Hydraena particeps Perkins, 1980
| |
| Species |
Hydraena parva Zwick, 1977
| |
| Species |
Hydraena parysatis Janssens, 1981
| |
| Species |
Hydraena paucistriata Jäch and Díaz, 2000
| |
| Species |
Hydraena paulmoritz Jäch, Díaz and Skale, 2013
| |
| Species |
Hydraena pavicula Perkins, 1980
| |
| Species |
Hydraena paxillipes Perkins, 2011
| |
| Species |
Hydraena peckorum Perkins, 2011
| |
| Species |
Hydraena pectenata Perkins, 2011
| |
| Species |
Hydraena pedroaguilerai Perkins, 2011
| |
| Species |
Hydraena pegopyga Perkins, 2011
| |
| Species |
Hydraena pelops Jäch, 1995
| |
| Species |
Hydraena pensylvanica Kiesenwetter, 1849
| |
| Species |
Hydraena penultimata Perkins, 2011
| |
| Species |
Hydraena perkinsi Spangler, 1980
| |
| Species |
Hydraena perlonga Balfour-Browne, 1950
| |
| Species |
Hydraena perpunctata Perkins, 2011
| |
| Species |
Hydraena persica Janssens, 1981
| |
| Species |
Hydraena pertransversa Perkins, 2011
| |
| Species |
Hydraena peru Perkins, 1980
| |
| Species |
Hydraena pesici Skale and Jäch, 2011
| |
| Species |
Hydraena petila Perkins, 1980
| |
| Species |
Hydraena phainops Perkins, 2011
| |
| Species |
Hydraena phallerata Orchymont, 1944
| |
| Species |
Hydraena phallica Orchymont, 1930
| |
| Species |
Hydraena phassilyi Orchymont, 1931
| |
| Species |
Hydraena philippi Jäch and Díaz, 2005
| |
| Species |
Hydraena philyra Orchymont, 1944
| |
| Species |
Hydraena phoenicia Jäch, Díaz and Dia in Jäch, Dia and Díaz, 2006
| |
| Species |
Hydraena photogenica Perkins, 2011
| |
| Species |
Hydraena pici Sainte-Claire Deville, 1905
| |
| Species |
Hydraena picula Perkins, 2011
| |
| Species |
Hydraena pilimera Brojer and Jäch, 2011
| |
| Species |
Hydraena pilipes Zwick, 1977
| |
| Species |
Hydraena pilulambra Perkins, 2011
| |
| Species |
Hydraena pindica Janssens, 1965
| |
| Species |
Hydraena pisciforma Perkins, 2014
| |
| Species |
Hydraena planata Kiesenwetter, 1849
| |
| Species |
Hydraena plastica Orchymont, 1943
| |
| Species |
Hydraena platycnemis Jäch, 1988
| |
| Species |
Hydraena platynaspis Jäch, 1988
| |
| Species |
Hydraena platysoma Janssens, 1968
| |
| Species |
Hydraena plaumanni Orchymont, 1937
| |
| Species |
Hydraena plumipes Rey, 1886
| |
| Species |
Hydraena pluralticola Perkins, 2011
| |
| Species |
Hydraena plurifurcata Jäch and Díaz, 1998
| |
| Species |
Hydraena polita Kiesenwetter, 1849
| |
| Species |
Hydraena pontequula Perkins, 1980
| |
| Species |
Hydraena pontica Janssens, 1963
| |
| Species |
Hydraena porchi Perkins, 2007
| |
| Species |
Hydraena porcula Jäch and Díaz, 1998
| |
| Species |
Hydraena praetermissa Jäch, 1987
| |
| Species |
Hydraena premordica Perkins, 1980
| |
| Species |
Hydraena pretneri Chiesa, 1927
| |
| Species |
Hydraena prieto Perkins, 1980
| |
| Species |
Hydraena princeps Fauvel, 1903
| |
| Species |
Hydraena processa Perkins, 2011
| |
| Species |
Hydraena producta Mulsant and Rey, 1852
| |
| Species |
Hydraena proesei Skale and Jäch, 2011
| |
| Species |
Hydraena profunda Perkins, 2014
| |
| Species |
Hydraena prokini Jäch and Díaz, 2006
| |
| Species |
Hydraena propria Perkins, 2011
| |
| Species |
Hydraena prusensis Jäch, 1992
| |
| Species |
Hydraena pseudocirrata Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena pseudopalawanensis Freitag and Jäch, 2007
| |
| Species |
Hydraena pseudoriparia Orchymont, 1945
| |
| Species |
Hydraena puetzi Jäch, 1994
| |
| Species |
Hydraena pugillista Perkins, 2007
| |
| Species |
Hydraena pulchella Germar, 1824
| |
| Species |
Hydraena pulsatrix Perkins, 1980
| |
| Species |
Hydraena punctata LeConte, 1855
| |
| Species |
Hydraena puncticollis Sharp, 1882
| |
| Species |
Hydraena punctilata Perkins, 2011
| |
| Species |
Hydraena putearius Jäch and Díaz, 2000
| |
| Species |
Hydraena pygmaea Waterhouse, 1833
| |
| Species |
Hydraena quadrata (Janssens, 1980)
| |
| Species |
Hydraena quadricollis Wollaston, 1864
| |
| Species |
Hydraena quadricurvipes Perkins, 1980
| |
| Species |
Hydraena quadriplumipes Perkins, 2011
| |
| Species |
Hydraena quechua Perkins, 1980
| |
| Species |
Hydraena queenslandica Perkins, 2007
| |
| Species |
Hydraena quetiae Castro, 2000
| |
| Species |
Hydraena quilisi Lagar, Fresneda and Fernando, 1987
| |
| Species |
Hydraena quintana Perkins, 2011
| |
| Species |
Hydraena ramuensis Perkins, 2011
| |
| Species |
Hydraena ramuquintana Perez, 2011
| |
| Species |
Hydraena receptiva Perkins, 2011
| |
| Species |
Hydraena reflectiva Perkins, 2014
| |
| Species |
Hydraena regimbarti Zaitzev, 1908
| |
| Species |
Hydraena remulipes Perkins, 2011
| |
| Species |
Hydraena reticulata Zwick, 1977
| |
| Species |
Hydraena reticuloides Perkins, 2007
| |
| Species |
Hydraena reticulositis Perkins, 2007
| |
| Species |
Hydraena revelovela Perkins, 2007
| |
| Species |
Hydraena reverberata Perkins, 2011
| |
| Species |
Hydraena reyi Kuwert, 1888
| |
| Species |
Hydraena rhinoceros (Janssens, 1972)
| |
| Species |
Hydraena rhodia Jäch, 1985
| |
| Species |
Hydraena riberai Jäch, Aguilera and Hernando, 1998
| |
| Species |
Hydraena richardimbi Jäch, 1992
| |
| Species |
Hydraena rigua Orchymont, 1931
| |
| Species |
Hydraena ripaeaureae (Janssens, 1972)
| |
| Species |
Hydraena riparia Kugelann, 1794
| |
| Species |
Hydraena rivularis Guillebeau, 1896
| |
| Species |
Hydraena robusta Zwick, 1977
| |
| Species |
Hydraena rosannae Audisio, Trizzino and De Biase in Audisio, Trizzino, De Biase, Mancini and Antonini, 2009
| |
| Species |
Hydraena rudallensis Blackburn, 1896
| |
| Species |
Hydraena rufipennis Boscá Berga, 1932
| |
| Species |
Hydraena rufipes Curtis, 1830
| |
| Species |
Hydraena rugosa Mulsant, 1844
| |
| Species |
Hydraena ruinosa Zwick, 1977
| |
| Species |
Hydraena rukiyeae Kasapoglu, Jäch and Skale, 2010
| |
| Species |
Hydraena sabella Perkins, 1980
| |
| Species |
Hydraena saga Orchymont, 1930
| |
| Species |
Hydraena sagatai Perkins, 2011
| |
| Species |
Hydraena sahlbergi Orchymont, 1923
| |
| Species |
Hydraena saluta Perkins, 2011
| |
| Species |
Hydraena samia Jäch, 1986
| |
| Species |
Hydraena samnitica Knisch, 1924
| |
| Species |
Hydraena sanagergelyae Brojer and Jäch, 2011
| |
| Species |
Hydraena sanfilippoi (Audisio and De Biase, 1995)
| |
| Species |
Hydraena sappho Janssens, 1965
| |
| Species |
Hydraena sardoa Binaghi, 1961
| |
| Species |
Hydraena satoi Jäch and Díaz, 1999
| |
| Species |
Hydraena sautakei Jäch and Díaz, 1999
| |
| Species |
Hydraena sauteri Orchymont, 1913
| |
| Species |
Hydraena scabra Orchymont, 1925
| |
| Species |
Hydraena scabrosa Orchymont, 1931
| |
| Species |
Hydraena schawalleri Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena schilfii Jäch, 1988
| |
| Species |
Hydraena schillhammeri Jäch, 1988
| |
| Species |
Hydraena schmidi Jäch and Díaz, 2001
| |
| Species |
Hydraena schoedli Jäch, 1992
| |
| Species |
Hydraena schoenmanni Jäch, 1988
| |
| Species |
Hydraena schubertorum Jäch and Díaz, 2001
| |
| Species |
Hydraena schuelkei Jäch, 1992
| |
| Species |
Hydraena schuleri Ganglbauer, 1901
| |
| Species |
Hydraena scintilla Perkins, 1980
| |
| Species |
Hydraena scintillabella Perkins, 1980
| |
| Species |
Hydraena scintillamima Perkins, 2011
| |
| Species |
Hydraena scintillapicta Perkins, 2011
| |
| Species |
Hydraena scintillarca Perkins, 2011
| |
| Species |
Hydraena scintillutea Perkins, 1980
| |
| Species |
Hydraena scitula Orchymont, 1943
| |
| Species |
Hydraena scolops Perkins, 1980
| |
| Species |
Hydraena scopula Perkins, 1980
| |
| Species |
Hydraena scythica Janssens, 1974
| |
| Species |
Hydraena sebastiani Perkins, 2014
| |
| Species |
Hydraena sepikramuensis Perkins, 2011
| |
| Species |
Hydraena septemlacuum Jäch, 1992
| |
| Species |
Hydraena serpentina Jäch, 1988
| |
| Species |
Hydraena serricollis Wollaston, 1864
| |
| Species |
Hydraena servilia Orchymont, 1936
| |
| Species |
Hydraena sexarcuata Perkins, 2011
| |
| Species |
Hydraena sexsuprema Perkins, 2011
| |
| Species |
Hydraena sharmai Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena sharpi Rey, 1886
| |
| Species |
Hydraena shorti Perkins, 2011
| |
| Species |
Hydraena sicula Kiesenwetter, 1849
| |
| Species |
Hydraena sidon Jäch, Díaz and Dia in Jäch, Dia and Díaz, 2006
| |
| Species |
Hydraena sierra Perkins, 1980
| |
| Species |
Hydraena similis Orchymont, 1930
| |
| Species |
Hydraena simonidea Orchymont, 1931
| |
| Species |
Hydraena simplicicollis Blackburn, 1896
| |
| Species |
Hydraena simplipes Zwick, 1977
| |
| Species |
Hydraena singaporensis Jäch, Díaz and Skale, 2013
| |
| Species |
Hydraena sinope Jäch, 1992
| |
| Species |
Hydraena smyrnensis Sahlberg, 1908
| |
| Species |
Hydraena socius Jäch and Díaz, 1999
| |
| Species |
Hydraena solarii Pretner, 1930
| |
| Species |
Hydraena solodovnikovi Jäch and Díaz, 2006
| |
| Species |
Hydraena sordida Sharp, 1882
| |
| Species |
Hydraena spangleri Perkins, 1980
| |
| Species |
Hydraena spatula Perkins, 2011
| |
| Species |
Hydraena speciosa Orchymont, 1944
| |
| Species |
Hydraena spinipes Baudi, 1882
| |
| Species |
Hydraena spinissima Perkins, 2007
| |
| Species |
Hydraena spinobesa Perkins, 2011
| |
| Species |
Hydraena splecoma Perkins, 1980
| |
| Species |
Hydraena squalida Orchymont, 1932
| |
| Species |
Hydraena stefani Jäch and Díaz, 2005
| |
| Species |
Hydraena steineri Perkins, 2011
| |
| Species |
Hydraena stellula Perkins, 2011
| |
| Species |
Hydraena storeyi Perkins, 2007
| |
| Species |
Hydraena striolata Perkins, 2011
| |
| Species |
Hydraena stussineri Kuwert, 1888
| |
| Species |
Hydraena subacuminata Rey, 1884
| |
| Species |
Hydraena subgrandis Jäch, 1988
| |
| Species |
Hydraena subimpressa Rey, 1885
| |
| Species |
Hydraena subina Orchymont, 1944
| |
| Species |
Hydraena subinflata Orchymont, 1944
| |
| Species |
Hydraena subinoides Orchymont, 1944
| |
| Species |
Hydraena subintegra Ganglbauer, 1901
| |
| Species |
Hydraena subinura Orchymont, 1944
| |
| Species |
Hydraena subirregularis Pic, 1918
| |
| Species |
Hydraena subjuncta Orchymont, 1930
| |
| Species |
Hydraena sublamina Orchymont, 1945
| |
| Species |
Hydraena sublapsa Orchymont, 1945
| |
| Species |
Hydraena subsequens Rey, 1886
| |
| Species |
Hydraena supersexa Perkins, 2011
| |
| Species |
Hydraena supina Perkins, 2011
| |
| Species |
Hydraena szechuanensis Pu, 1951
| |
| Species |
Hydraena takin Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena takutu Perkins, 2011
| |
| Species |
Hydraena tarsotricha Perkins, 2011
| |
| Species |
Hydraena tarvisina (Ferro, 1992)
| |
| Species |
Hydraena tatii Sáinz-Cantero and Alba-Tercedor, 1989
| |
| Species |
Hydraena tauricola Jäch, 1988
| |
| Species |
Hydraena taxila Janssens, 1962
| |
| Species |
Hydraena tekmanensis Jäch, Skale and Kasapoglu, 2011
| |
| Species |
Hydraena tenjikuana Satô, 1979
| |
| Species |
Hydraena tenuis (Janssens, 1980)
| |
| Species |
Hydraena tenuisella Perkins, 2007
| |
| Species |
Hydraena tenuisoror Perkins, 2007
| |
| Species |
Hydraena terebrans Jäch, 1992
| |
| Species |
Hydraena terralta Perkins, 1980
| |
| Species |
Hydraena testacea Curtis, 1830
| |
| Species |
Hydraena tetana Perkins, 2011
| |
| Species |
Hydraena textila Perkins, 2007
| |
| Species |
Hydraena thienemanni Orchymont, 1932
| |
| Species |
Hydraena thola Perkins, 2011
| |
| Species |
Hydraena tholasoris Perkins, 2011
| |
| Species |
Hydraena thumbelina Perkins, 2011
| |
| Species |
Hydraena thumbelipes Perkins, 2011
| |
| Species |
Hydraena thyene Balfour-Browne, 1958
| |
| Species |
Hydraena tiara Perkins, 2014
| |
| Species |
Hydraena tibiopaca Perkins, 2011
| |
| Species |
Hydraena tobogan Perkins, 2011
| |
| Species |
Hydraena torosopala Perkins, 2011
| |
| Species |
Hydraena torricellica Perkins, 2011
| |
| Species |
Hydraena transvallis Perkins, 2011
| |
| Species |
Hydraena trapezoidalis Zwick, 1977
| |
| Species |
Hydraena tricantha Zwick, 1977
| |
| Species |
Hydraena trichotarsa Perkins, 2011
| |
| Species |
Hydraena tricosipes Perkins, 2011
| |
| Species |
Hydraena tridigita Perkins, 2011
| |
| Species |
Hydraena tridisca Perkins, 2007
| |
| Species |
Hydraena triloba Perkins, 2007
| |
| Species |
Hydraena trinidensis Perkins, 1980
| |
| Species |
Hydraena triparamera Jäch, 1982
| |
| Species |
Hydraena tritropis Perkins, 2011
| |
| Species |
Hydraena tritutela Perkins, 2011
| |
| Species |
Hydraena truncata Rey, 1885
| |
| Species |
Hydraena tsushimaensis Jäch and Díaz, 2012
| |
| Species |
Hydraena tubuliphallis Jäch, 1982
| |
| Species |
Hydraena tucumanica Perkins, 1980
| |
| Species |
Hydraena tuolumne Perkins, 1980
| |
| Species |
Hydraena turcica Janssens, 1965
| |
| Species |
Hydraena turrialba Perkins, 1980
| |
| Species |
Hydraena tyrrhena Binaghi, 1961
| |
| Species |
Hydraena ulna Perkins, 2011
| |
| Species |
Hydraena umbolenta Perkins, 2011
| |
| Species |
Hydraena unca Valladares, 1989
| |
| Species |
Hydraena undevigintioctogintasisyphos Jäch and Díaz, 2005
| |
| Species |
Hydraena undulata Jäch and Díaz, 1998
| |
| Species |
Hydraena uniforma Perkins, 2014
| |
| Species |
Hydraena unita Perkins, 2011
| |
| Species |
Hydraena uzbekistanica Jäch, 1994
| |
| Species |
Hydraena vadosa Perkins, 2014
| |
| Species |
Hydraena valentini Jäch and Díaz, 2012
| |
| Species |
Hydraena vandykei Orchymont, 1923
| |
| Species |
Hydraena variopaca Perkins, 2011
| |
| Species |
Hydraena vedrasi Orchymont, 1931
| |
| Species |
Hydraena vela Perkins, 1980
| |
| Species |
Hydraena velvetina Perkins, 2011
| |
| Species |
Hydraena venezuela Perkins, 2011
| |
| Species |
Hydraena verberans Jäch and Díaz, 2006
| |
| Species |
Hydraena verstraeteni Ferro, 1984
| |
| Species |
Hydraena victoriae Jäch and Díaz, 1999
| |
| Species |
Hydraena vietnamensis (Janssens, 1972)
| |
| Species |
Hydraena virginalis Janssens, 1963
| |
| Species |
Hydraena vodozi Sainte-Claire Deville, 1908
| |
| Species |
Hydraena vulgaris Jäch and Díaz, 2000
| |
| Species |
Hydraena waldheimi Jäch, 1987
| |
| Species |
Hydraena wangi Jäch and Díaz, 1998
| |
| Species |
Hydraena wangmiaoi Jäch and Díaz, 2005
| |
| Species |
Hydraena watanabei Jäch and Satô, 1988
| |
| Species |
Hydraena wattsi Perkins, 2007
| |
| Species |
Hydraena weigeli Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena weiri Perkins, 2007
| |
| Species |
Hydraena wencke Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena wewalkai Jäch, 1988
| |
| Species |
Hydraena williamsensis Deane, 1931
| |
| Species |
Hydraena wittmeri Satô, 1979
| |
| Species |
Hydraena wolfi Skale and Jäch in Jäch and Skale, 2009
| |
| Species |
Hydraena wrasei Jäch, 1992
| |
| Species |
Hydraena xingu Perkins, 2011
| |
| Species |
Hydraena yangae Jäch, Díaz and Skale, 2013
| |
| Species |
Hydraena yonaguniensis Jäch and Díaz, 2003
| |
| Species |
Hydraena yosemitensis Perkins, 1980
| |
| Species |
Hydraena yoshitomii Jäch and Díaz, 1999
| |
| Species |
Hydraena youngi Perkins, 1980
| |
| Species |
Hydraena ypsilon Zwick, 1977
| |
| Species |
Hydraena yunnanensis Pu, 1942
| |
| Species |
Hydraena zapatina Perkins, 1980
| |
| Species |
Hydraena zelandica Ordish, 1984
| |
| Species |
Hydraena zetteli Freitag and Jäch, 2007
| |
| Species |
Hydraena zezerensis Díaz Pazos and Bilton, 1995
| |
| Species |
Hydraena zimbabwensis Perkins, 2014
| |
| Species |
Hydraena zwicki Perkins, 2007
| |
|
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