Cybister sugillatus
Family: Dytiscidae
Habitat: Wetland
General appearance: A large species, with total length of about 21-22 mm. Do not have yellow lateral band on elytra and pronotum unlike most Cybister spp. Hind coxal lines distinct.
Reference:
Pederzani, F. (1995). Keys to the identification of the genera and subgenera of adult Dytiscidae (sensu lato) of the world (Coleoptera Dytiscidae). Atti dell'Accademia Roveretana degli Agiati, a, 244, 5-83.