Review of the genus Coelostoma of Taiwan with description of a new species (Coleoptera: Hydrophilidae)
Liu Hsing-Che, Hu Fang-Shuo, Fikáček Martin
Acta Entomologica Musei Nationalis Pragae 60(1): 155-162, 2020
Published online: 11th March 2020
Published in print: 15th June 2020
Abstract: The water scavenger beetle genus Coelostoma Brullé, 1835 of Taiwan is reviewed
based on freshly collected material and museum specimens. Seven species are
recognized, of which one new species, Coelostoma (Lachnocoelostoma) taiwanense
sp. nov., is described. Distributional data of C. fallaciosum Orchymont,
1936 and C. stultum (Walker, 1858) are summarized. Coelostoma phallicum
Orchymont, 1940, C. wui Orchymont, 1940, C. vitalisi Orchymont, 1923 and C.
bhutanicum Jayaswal, 1972 are reported for the first time from Taiwan.
Coelostoma vagum Orchymont, 1940 is excluded from Taiwanese fauna pending the
rediscovery of vouchers or newly collected specimens. A distribution map and
key to Taiwanese species of the genus are provided.
Key words: Coleoptera, Hydrophilidae, Coelostomatini, Coelostoma, taxonomy, new species, new records, Taiwan, Sino-Himalayan Subregion, Oriental Region