Elateriformia genera

Optioservus was a genus of riffle beetles in the family Elmidae; as of 2021 it is a junior synonym of Heterlimnius. There were about 13 described species in Optioservus.

Sandalus is a genus of cicada parasite beetles in the family Rhipiceridae.

Dubiraphia is a genus of riffle beetles in the family Elmidae. There are about 11 described species in Dubiraphia.

genus of insects

Decliniidae is a family of beetles belonging to Scirtoidea. It contains the single genus Declinia with two species, D. relicta and D. versicolor, found in the Russian Far East and Japan, respectively. Little is known of their ecology, and their larvae are unknown. Specimens of D. relicta were found with pollen grains in their gut.

Lopheros is a genus of net-winged beetles in the family Lycidae. There are about eight described species in Lopheros. thumb|Lopheros fraternus

genus of insects

Achras is a monotypic genus of Australasian beetles in the tribe Metriorrhynchini, erected by Charles Owen Waterhouse in 1879. It contains the species Achras limbatum (Waterhouse, 1877).

Clypeorhagus is a genus of beetles belonging to the family Eucnemidae.