title: A review of the omicrine genera Omicrogiton, Mircogioton and Peratogonus of China (Coleoptera, Hydrophilidae, Sphaeridiinae).
abstract: The Chinese species of the genera Omicrogiton Orchymont, 1919, Peratogonus Sharp, 1884 and Mircogioton Orchymont, 1937 are reviewed, diagnosed and keyed. Mircogioton and Omicrogiton are reported for the first time from China, Peratogonus for the first time for mainland China. Five species are recognized: Omicrogitoncoomani Balfour-Browne, 1939 (Guangdong, Hongkong), Omicrogitonhainanensis sp. n. (Hainan), Omicrogitonroberti sp. n. (Hainan), Mircogiotoncoomani Orchymont, 1937 (Yunnan), and Peratogonusreversus Sharp, 1884 (Guangdong, Jiangxi, Taiwan). Lectotype of Omicrogitoncoomani is designated. Mircogiotoncognitus (Malcolm, 1981), syn. n. is considered a junior subjective synonym of Mircogiotoncoomani Orchymont, 1939. Species of Mircogioton and Omicrogiton inhabit decaying banana trunks, whereas Peratogonusreversus was always collected from moist forest leaf litter.
authors.affiliation: Institute of Entomology, Sun Yat-sen University, Guangzhou, 510275, Guangdong, China.
authors.forename: Fenglong
authors.initials: F
authors.lastname: Jia
authors.affiliation: Institute of Entomology, Sun Yat-sen University, Guangzhou, 510275, Guangdong, China.
authors.forename: Renchao
authors.initials: R
authors.lastname: Lin
authors.affiliation: Institute of Entomology, Sun Yat-sen University, Guangzhou, 510275, Guangdong, China.
authors.forename: Bijun
authors.initials: B
authors.lastname: Li
authors.affiliation: Department of Entomology, National Museum, Cirkusová 1740, CZ-193 00 Praha 9 - Horní Počernice, Czech Republic ; Department of Zoology, Faculty of Science, Charles University in Prague, Viničná 7, CZ-128 44 Praha 2, Czech Republic.
authors.forename: Martin
authors.initials: M
authors.lastname: Fikáček
keywords: China; Hydrophilidae; Mircogioton; Omicrini; Omicrogiton; Oriental region; Peratogonus; Sphaeridiinae; new record; new species; new synonym