Ventral view of thorax of eastern Palaearctic and Oriental genera of the Megasternini. A. Cryptopleurum ferrugineum. B. Megasternum concinnum. C. Pacrillum manchuricum. D. Pachysternum nigrovittatum. E. Peltocercyon coomani. F. Armostus schenklingi.

  Part of: Jia F, Liang Z, Fikáček M (2020) A review of Himalcercyon stat. nov., with description of a new species from the Chinese Himalaya and an updated key to Asian genera of Megasternini (Coleoptera, Hydrophilidae). Deutsche Entomologische Zeitschrift 67(1): 35-49.