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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 | Elateriformia Crowson, 1960
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| Superfamily | Byrrhoidea Latreille, 1804
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| Family | Psephenidae Lacordaire, 1854
– water-penny beetles |
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| Subfamily | Psepheninae Lacordaire, 1854
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| Genus | Psephenus Haldeman, 1853 |
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Direct Children: |
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| Species |
Psephenus arizonensis Brown and Murvosh, 1974
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| Species |
Psephenus falli Casey, 1893
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| Species |
Psephenus haldemani Horn, 1870
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| Species |
Psephenus herricki (DeKay, 1844)
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| Species |
Psephenus minckleyi Brown and Murvosh, 1974
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| Species |
Psephenus montanus Brown and Murvosh, 1974
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| Species |
Psephenus murvoshi Brown, 1970
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| Species |
Psephenus oresbius Spangler, 1968
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| Species |
Psephenus palpalis Champion, 1913
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| Species |
Psephenus texanus Brown and Arrington, 1967
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| Species |
Psephenus usingeri Hinton, 1934
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