ITIS - Report: Hydraena

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Hydraena Kugelann, 1794
Taxonomic Serial No.: 112757

(Download Help) Hydraena TSN 112757

Taxonomy and Nomenclature


	Kingdom:	Animalia
	Taxonomic Rank:	Genus
	Synonym(s):
	Common Name(s):

	Taxonomic Status:
	Current Standing:	valid

	Data Quality Indicators:
	Record Credibility Rating:	verified - standards met
	Global Species Completeness:	complete
	Latest Record Review:	2016

Taxonomic Hierarchy


	Kingdom	Animalia – Animal, animaux, animals
	Subkingdom	Bilateria – triploblasts
	Infrakingdom	Protostomia
	Superphylum	Ecdysozoa
	Phylum	Arthropoda – Artrópode, arthropodes, arthropods
	Subphylum	Hexapoda – hexapods
	Class	Insecta – insects, hexapoda, inseto, insectes
	Subclass	Pterygota – insects ailés, winged insects
	Infraclass	Neoptera – modern, wing-folding insects
	Superorder	Holometabola
	Order	Coleoptera Linnaeus, 1758 – beetles, coléoptères, besouro
	Suborder	Polyphaga Emery, 1886
	Infraorder	Staphyliniformia Lameere, 1900
	Superfamily	Staphylinoidea Latreille, 1802
	Family	Hydraenidae Mulsant, 1844 – minute moss beetles
	Subfamily	Hydraeninae Mulsant, 1844
	Tribe	Hydraenini Mulsant, 1844
	Genus	Hydraena Kugelann, 1794
		Direct Children:
	Species	Hydraena abbasigili Jäch, 1988
	Species	Hydraena abdita Orchymont, 1948
	Species	Hydraena abyssinica Régimbart, 1905
	Species	Hydraena accurata Orchymont, 1948
	Species	Hydraena achaica Jäch, 1995
	Species	Hydraena acumena Perkins, 2011
	Species	Hydraena adelbertensis Perkins, 2011
	Species	Hydraena adrastea Orchymont, 1948
	Species	Hydraena aethaliensis Breit, 1917
	Species	Hydraena affirmata Perkins, 2007
	Species	Hydraena affusa Orchymont, 1936
	Species	Hydraena africana Kuwert, 1888
	Species	Hydraena akameku Perkins, 2011
	Species	Hydraena akbesiana Audisio, De Biase and Jäch, 1993
	Species	Hydraena albai Sáinz-Cantero, 1993
	Species	Hydraena alberti Balfour-Browne, 1950
	Species	Hydraena alcantarana Ienistea, 1985
	Species	Hydraena algerina Kaddouri, 1992
	Species	Hydraena alia Orchymont, 1934
	Species	Hydraena aliciae Jäch and Díaz, 2005
	Species	Hydraena allomorpha Lagar and Fresneda, 1990
	Species	Hydraena alluaudi Régimbart, 1906
	Species	Hydraena alpicola Pretner, 1931
	Species	Hydraena altamirensis Díaz Pazos and Garrido Gonzalez, 1993
	Species	Hydraena altapapua Perkins, 2011
	Species	Hydraena alternata Perkins, 1980
	Species	Hydraena alterra Perkins, 1980
	Species	Hydraena alticola Skale and Jäch, 2008
	Species	Hydraena altiphila Perkins, 2011
	Species	Hydraena amazonica Perkins, 2011
	Species	Hydraena ambiflagellata Zwick, 1977
	Species	Hydraena ambigua Ganglbauer, 1901
	Species	Hydraena ambiosina Perkins, 2007
	Species	Hydraena ambra Perkins, 2011
	Species	Hydraena ambripes Perkins, 2011
	Species	Hydraena ambroides Perkins, 2011
	Species	Hydraena americana Jäch, 1993
	Species	Hydraena amidensis Jäch, 1988
	Species	Hydraena ampla Perkins, 2011
	Species	Hydraena anaphora Perkins, 1980
	Species	Hydraena anatolica Janssens, 1963
	Species	Hydraena ancylis Perkins, 1980
	Species	Hydraena ancyrae Jäch, 1992
	Species	Hydraena andalusa Lagar and Fresneda, 1990
	Species	Hydraena andreinii Orchymont, 1934
	Species	Hydraena angulicollis Notman, 1921
	Species	Hydraena angulosa Mulsant, 1844
	Species	Hydraena angustata Sturm, 1836
	Species	Hydraena anisonycha Perkins, 1980
	Species	Hydraena antaria Perkins, 2007
	Species	Hydraena antiatlantica Jäch, Aguilera and Hernando, 1998
	Species	Hydraena antiochena Jäch, 1988
	Species	Hydraena apertista Perkins, 2011
	Species	Hydraena apexa Perkins, 2011
	Species	Hydraena appalachicola Perkins, 1980
	Species	Hydraena appetita Perkins, 2007
	Species	Hydraena aquila Perkins, 2011
	Species	Hydraena arabica Balfour-Browne, 1951
	Species	Hydraena arachthi Ferro and Jäch, 2000
	Species	Hydraena arcta Perkins, 2007
	Species	Hydraena arenicola Perkins, 1980
	Species	Hydraena argutipes Perkins, 1980
	Species	Hydraena ariana Janssens, 1962
	Species	Hydraena arizonica Perkins, 1980
	Species	Hydraena armata Reitter, 1880
	Species	Hydraena armatura Perkins, 2014
	Species	Hydraena armeniaca Janssens, 1968
	Species	Hydraena armipalpis Jäch and Díaz, 2000
	Species	Hydraena armipes Rey, 1886
	Species	Hydraena aroensis (Ferro, 1991)
	Species	Hydraena arunensis Skale and Jäch in Jäch and Skale, 2009
	Species	Hydraena ascensa Perkins, 2007
	Species	Hydraena assimilis Rey, 1885
	Species	Hydraena ateneo Freitag, 2013
	Species	Hydraena athertonica Perkins, 2007
	Species	Hydraena atrata Desbrochers des Loges, 1891
	Species	Hydraena atroscintilla Perkins, 2011
	Species	Hydraena attaleiae Ferro, 1984
	Species	Hydraena audisioi Jäch, 1992
	Species	Hydraena aulaarta Perkins, 2011
	Species	Hydraena aurita Jäch, 1988
	Species	Hydraena australica Zwick, 1977
	Species	Hydraena australula Perkins, 2007
	Species	Hydraena austrobesa Perkins, 2011
	Species	Hydraena avuncula Jäch, 1988
	Species	Hydraena bacchusi Perkins, 2011
	Species	Hydraena bactriana Janssens, 1962
	Species	Hydraena bakriensis Skale and Jäch, 2011
	Species	Hydraena balearica Orchymont, 1930
	Species	Hydraena balfourbrownei Bameul, 1986
	Species	Hydraena balkei Perkins, 2011
	Species	Hydraena balli Orchymont, 1940
	Species	Hydraena barbipes Zwick, 1977
	Species	Hydraena barricula Perkins, 1980
	Species	Hydraena barrosi Orchymont, 1934
	Species	Hydraena bedeli Berthélemy, 1992
	Species	Hydraena belgica Orchymont, 1930
	Species	Hydraena beniensis Perkins, 2011
	Species	Hydraena benjaminus Jäch and Díaz, 2006
	Species	Hydraena bensae Ganglbauer, 1901
	Species	Hydraena bergeri (Janssens, 1972)
	Species	Hydraena berthelemyana Jäch, Díaz and Dia in Jäch, Dia and Díaz, 2006
	Species	Hydraena berytus Jäch, 1986
	Species	Hydraena beyarslani Jäch, 1988
	Species	Hydraena bicarina Perkins, 2014
	Species	Hydraena bicarinova Perkins, 2011
	Species	Hydraena bicolorata Jäch, 1997
	Species	Hydraena bicuspidata Ganglbauer, 1901
	Species	Hydraena bidefensa Perkins, 2007
	Species	Hydraena bifunda Perkins, 2011
	Species	Hydraena bihamata Champion, 1920
	Species	Hydraena biimpressa Perkins, 2007
	Species	Hydraena billi Zwick, 1977
	Species	Hydraena bilobata Jäch and Díaz, 1998
	Species	Hydraena biltoni Jäch and Díaz, 2012
	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
	Species	Hydraena britteni Joy, 1907
	Species	Hydraena brittoni Zwick, 1977
	Species	Hydraena bromleyae Jäch, 1986
	Species	Hydraena browni Perkins, 1980
	Species	Hydraena bubulla Perkins, 2011
	Species	Hydraena bulgarica Breit, 1916
	Species	Hydraena buloba Perkins, 2011
	Species	Hydraena buquintana Perkins, 2011
	Species	Hydraena buscintilla Perkins, 2011
	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
	Species	Hydraena caprivica Perkins, 2014
	Species	Hydraena capta Orchymont, 1936
	Species	Hydraena carbonaria Kiesenwetter, 1849
	Species	Hydraena carica Jäch, 1988
	Species	Hydraena carinocisiva Perkins, 2011
	Species	Hydraena carinulata Rey, 1886
	Species	Hydraena carmellita Perkins, 2011
	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
	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
	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
	Species	Hydraena claudia Freitag and Jäch, 2007
	Species	Hydraena clavicula Perkins, 2014
	Species	Hydraena clavigera Zwick, 1977
	Species	Hydraena clemens Jäch and Díaz, 2006
	Species	Hydraena clinodorsa Perkins, 2011
	Species	Hydraena clystera Perkins, 2011
	Species	Hydraena cochabamba Perkins, 2011
	Species	Hydraena colchica Janssens, 1963
	Species	Hydraena colombiana Perkins, 1980
	Species	Hydraena colorata Perkins, 2011
	Species	Hydraena colymba Perkins, 1980
	Species	Hydraena compressipilis Jäch and Díaz, 1998
	Species	Hydraena concepcionica Perkins, 2011
	Species	Hydraena concinna Orchymont, 1932
	Species	Hydraena confluenta Perkins, 2011
	Species	Hydraena confusa Pu, 1951
	Species	Hydraena connexa Orchymont, 1932
	Species	Hydraena converga Perkins, 2007
	Species	Hydraena coomani Orchymont, 1932
	Species	Hydraena cooperi Balfour-Browne, 1954
	Species	Hydraena cooperoides Perkins, 2014
	Species	Hydraena copulata Perkins, 2011
	Species	Hydraena cordata Schaufuss, 1883
	Species	Hydraena cordiformis Jäch and Díaz, 2000
	Species	Hydraena cordispina Perkins, 2011
	Species	Hydraena corinna Orchymont, 1936
	Species	Hydraena cornelli Jäch and Díaz, 1998
	Species	Hydraena corrugis Orchymont, 1934
	Species	Hydraena coryleti Jäch, 1992
	Species	Hydraena costiniceps Perkins, 1980
	Species	Hydraena crepidoptera Jäch, 1992
	Species	Hydraena cristatigena Jäch and Díaz, 2000
	Species	Hydraena croatica Kuwert, 1888
	Species	Hydraena cryptostoma Jäch, 1992
	Species	Hydraena crystallina Perkins, 1980
	Species	Hydraena cubista Perkins, 2007
	Species	Hydraena cultrata Perkins, 2007
	Species	Hydraena cunicula Perkins, 2011
	Species	Hydraena cunninghamensis Perkins, 2007
	Species	Hydraena curta Kiesenwetter, 1849
	Species	Hydraena curtipalpis Jäch and Díaz, 1998
	Species	Hydraena curvipes Jäch and Díaz, 2012
	Species	Hydraena curvosa Perkins, 2011
	Species	Hydraena cuspidicollis Perkins, 1980
	Species	Hydraena cyclops Jäch and Díaz, 2000
	Species	Hydraena cygnus Zwick, 1977
	Species	Hydraena czernohorskyi Müller, 1911
	Species	Hydraena d-concava Perkins, 2011
	Species	Hydraena d-destina Perkins, 1980
	Species	Hydraena dalmatina Ganglbauer, 1901
	Species	Hydraena damascena Pic, 1910
	Species	Hydraena dariensis Perkins, 2011
	Species	Hydraena darwini Perkins, 2007
	Species	Hydraena debeckeri (Janssens, 1972)
	Species	Hydraena decepta Perkins, 2011
	Species	Hydraena decipiens Zwick, 1977
	Species	Hydraena decolor Sainte-Claire Deville, 1903
	Species	Hydraena decui Spangler, 1980
	Species	Hydraena delia Balfour-Browne, 1978
	Species	Hydraena deliquesca Perkins, 2007
	Species	Hydraena delvasi Delgado and Collantes, 1996
	Species	Hydraena densa Fauvel, 1883
	Species	Hydraena dentipalpis Reitter, 1888
	Species	Hydraena dentipes Germar, 1824
	Species	Hydraena devillei Ganglbauer, 1901
	Species	Hydraena devincta Orchymont, 1940
	Species	Hydraena diadema Perkins, 2011
	Species	Hydraena diazi Trizzino, Jäch and Ribera in Trizzino, Jäch, Audisio and Rivera, 2011
	Species	Hydraena diffusa Perkins, 2011
	Species	Hydraena dilutipes Fairmaire, 1898
	Species	Hydraena dimorpha Orchymont, 1922
	Species	Hydraena dinosaurophila Jäch, 1994
	Species	Hydraena discicollis Fairmaire, 1898
	Species	Hydraena discreta Ganglbauer, 1904
	Species	Hydraena disparamera Perkins, 2007
	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

References


	Expert(s):
	Expert:
	Notes:
	Reference for:

	Other Source(s):
	Source:	NODC Taxonomic Code, database (version 8.0)
	Acquired:	1996
	Notes:
	Reference for:	Hydraena

	Publication(s):
	Author(s)/Editor(s):	Hansen, Michael
	Publication Date:	1998
	Article/Chapter Title:
	Journal/Book Name, Vol. No.:	World Catalogue of Insects, volume 1: Hydraenidae (Coleoptera)
	Page(s):	168
	Publisher:	Apollo Books
	Publication Place:	Stenstrup, Denmark
	ISBN/ISSN:	87-88757-27-7
	Notes:
	Reference for:	Hydraena

	Author(s)/Editor(s):	Perkins, Philip D.
	Publication Date:	2007
	Article/Chapter Title:	A revision of the Australian species of the water beetle genus Hydraena Kugelann (Coleoptera: Hydraenidae)
	Journal/Book Name, Vol. No.:	Zootaxa, issue 1489
	Page(s):	1-207
	Publisher:
	Publication Place:
	ISBN/ISSN:	1175-5326
	Notes:	Online edition ISSN is 1175-5334; available at http://www.mapress.com/zootaxa/
	Reference for:	Hydraena

Geographic Information


	Geographic Division:

	Jurisdiction/Origin:

Comments


	Comment:	The subdivision of the genus Hydraena into subgenera is currently uncertain. For this reason we have decided to leave them out of this database. Comprehensive study of the species groupings is currently under study through molecular analysis (M. Jäch, personal communication)

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