A review of the Asian species of the genus Pachysternum (Coleoptera: Hydrophilidae: Sphaeridiinae) Author Fikáček, Martin Author Jia, Fenglong Author Prokin, Alexander text Zootaxa 2012 2012-03-02 3219 1 53 journal article 10.11646/zootaxa.3219.1.1 3fa772dc-c5b2-40c9-b28e-cd067ca9a3f6 1175-5326 280223 Pachysternum Motschulsky, 1863 Pachysternum Motschulsky, 1863 : 446 . Type species. Pachysternum nigrovittatum Motschulsky, 1863 (designated by Knisch 1924 a : 158 ). Composition. Contains ten Oriental species, one species distributed in eastern Palaearctic, and 14 African species (one of them, P. capense , also now occurs in Europe and Australia ).