''Porhydrus'' is a genus of

beetle Beetles are insects that form the Taxonomic rank, order Coleoptera (), in the superorder Holometabola. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 40 ...

s in the family

Dytiscidae The Dytiscidae, from the Ancient Greek word δυτικός (''dystikos''), meaning "able to dive", are the predaceous diving beetles, a family of water beetles. They occur in virtually any freshwater habitat around the world, but a few species l ...

, containing the following species:Dytiscidae Species List
at Joel Hallan's Biology Catalog. Texas A&M University. Retrieved on 7 May 2012. * '' Porhydrus genei'' (Aubé, 1838) * '' Porhydrus lineatus'' (Fabricius, 1775) * '' Porhydrus obliquesignatus'' (Bielz, 1852) * '' Porhydrus vicinus'' (Aubé, 1838)

References

Dytiscidae Taxa named by Félix Guignot {{Dytiscidae-stub