Jałoszyński, P. (2017)

Taxonomy of ’Euconnus complex’. Part X. Drastophus placed as a junior synonym of Tetramelus, and Smicrophus as a junior synonym of Napochus (Coleoptera, Staphylinidae, Scydmaeninae)

. Zootaxa, 4232 (3), 421–428.