Ventral morphology (14) and morphology of aedeagus (15–22). 14 detail of meso- and metaventrite of Mircogioton coomani Orchymont, 1937 15 Omicrogiton hainanensis sp. n., holotype 16 O. roberti sp. n., holotype 17–18 O. coomani Balfour-Browne, 1939 (17 lectotype; 18 non-type specimen from China) 19 O. insularis Orchymont, 1919, specimen from Sarawak 20 Mircogioton coomani Orchymont, 1937, Chinese specimen 21–22 Peratogonus reversus Sharp, 1884 (21 syntype 22 specimen from China).

  
 
  Part of: Jia F, Lin R, Li B, Fikácek M (2015) A review of the omicrine genera Omicrogiton, Mircogioton and Peratogonus of China (Coleoptera, Hydrophilidae, Sphaeridiinae). ZooKeys 511: 99-116. https://doi.org/10.3897/zookeys.511.8980