Hydrophilus sp.

Family: Hydrophilidae
Subfamily: Hydrophilinae
Tribe: Hydrophilini

Habitat: Aquatic

General appearance: A very large species. Body oval.

 

Reference:
Hansen, M. (1991). The hydrophiloid beetles: phylogeny, classification and a revision of the genera (Coleoptera, Hydrophiloidea) (Vol. 40). Kgl. Danske Videnskabernes Selskab.