Coelostoma (Lachnocoelostoma) vagum Orchymont, 1940

Liu, Hsing-Che, Hu, Fang-Shuo & Fikáček, Martin, 2020, Review of the genus Coelostoma of Taiwan with description of a new species (Coleoptera: Hydrophilidae), Acta Entomologica Musei Nationalis Pragae 60 (1), pp. 155-162 : 161

Coelostoma (Lachnocoelostoma) vagum Orchymont, 1940

Comments. Coelostoma vagum was reported from Taiwan (without specified locality) by JIA (2005b), but the respective specimen from the Hokkaido University Museum is lost (A. L. Suzumura, pers. comm. 2019). The aedeagus of the species resembles that of C. taiwanense sp. nov. and it is hence possible that this record in fact refers to that species. We remove this species from the Taiwanese fauna at the moment, until the vouchers or fresh specimens from Taiwan are available.