''Eubrianax edwardsii'' is a species of water penny beetle in the family

Psephenidae Water-penny beetles are a family (the Psephenidae) of 272 species (in 35 genera) of aquatic beetles found on all continents except Antarctica, in both tropical and temperate areas. The young, which live in water, resemble tiny pennies. The larv ...

. It is found in North America.

References

Further reading