''Hoperius planatus'' is a species of

beetle Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...

in the family

Dytiscidae The Dytiscidae – based on the Greek ''dytikos'' (δυτικός), "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 live ...

, the only species in the genus ''Hoperius''.Dytiscidae Species List
at Joel Hallan's Biology Catalog. Texas A&M University. Retrieved on 7 May 2012.

References

Dytiscidae {{Dytiscidae-stub