Hydraenidae

Taxobox
name = Hydraenidae
regnum = Animalia
phylum = Arthropoda
classis = Insecta
ordo = Coleoptera
subordo = Polyphaga
infraordo = Staphyliniformia
superfamilia = Staphylinoidea
familia = Hydraenidae
familia_authority = Mulsant, 1844
subdivision_ranks = Diversity
subdivision =Two subfamilies (see text)
22 genera
? species

Hydraenidae is a family of very small aquatic beetles with a worldwide distribution. These beetles are generally 1-3 mm in length (although some species reach 7 mm) with clubbed antennae. They do not swim well and are generally found crawling in marginal vegetation. Most are phytophagous but a few saprophagous and predatory species are known.

The larvae, although preferring damp habitats near water, are non-aquatic and tend to drown easily.

ubfamilies

*Ochthebiinae
*Hydraeninae

References

* [http://www.lucidcentral.com/keys/lwrrdc/public/Aquatics/aqcola/html/COLA8.htm] [http://delta-intkey.com/britin/col/www/hydraeni.htm] - Family descriptions
* [http://tolweb.org/Hydraenidae Hydraenidae at Tolweb]