title: A new aberrant species of Nipponocercyon from the mountains of southeastern China (Coleoptera: Hydrophilidae: Sphaeridiinae).
abstract: Nipponocercyon satoi sp. nov. is described from the mountains of Zhenjiang and Jiangxi Provinces in Southwest China. Although the species bears all synapomorphies of Nipponocercyon Satô, 1963, it differs substantially from the other two species of the genus by its Pacrillum-like habitus (i.e. small, compact and strongly convex body with reduced surface sculpturing). The new species is compared in detail with the other two Nipponocercyon species as well as with Pacrillum Orchymont, 1941 and Megasternum Mulsant, 1844. The generic diagnosis of Nipponocercyon is adapted, and reasons for assigning the new species to Nipponocercyon are discussed.
authors: Department of Entomology, National Museum, Cirkusová 1740, CZ-19300, Praha 9 - Horní Počernice, Czech Republic. Department of Zoology, Faculty of Sciences, Charles University in Prague, Viničná 7, CZ-128 44 Praha 2, Czech Republic; Email: mfikacek@gmail.com.
authors: Martin
authors: M
authors: Fikáček
authors: Institute of Entomology, Life Science School, Sun Yat-sen University, Guangzhou, 510275, Guangdong, China.; Email: lssjfl@mail.sysu.edu.cn.
authors: Fenglong
authors: F
authors: Jia
authors: Baranovichi State University, Voykova ul. 21, Baranovichi 225404, Brest obl., Belarus.; Email: ryndevichsk@mail.ru.
authors: Sergey
authors: S
authors: Ryndevich
mesh_terms: D000818:Animals; D002681:China; D001517:Coleoptera / Q000033:anatomy & histology* / Q000145:classification*; D005260:Female; D008297:Male