''Hydraena'' is a genus of minute moss beetles in the family
Hydraenidae
Hydraenidae is a family of very small aquatic animal, aquatic beetles, sometimes called "Minute moss beetles", with a worldwide distribution. They are around 0.8 to 3.3 mm in length. The adults store air on the underside of the body as wel ...
. There are more than 990 described species in ''Hydraena''.
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See also
* List of Hydraena species
References
Further reading
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External links
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Staphylinoidea
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