Coelosoma subditum

Family: Hydrophilidae
Subfamily: Spaeridiinae
Tribe: Coelostomatini

Habitat: Wetland, among weeds at the edges of water.

General appearance: Medium body size. Body broadly oval and strongly convex.

 

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