Two new species of Helochares, with additional faunistic records from China (Coleoptera, Hydrophilidae, Acidocerinae)

Zookeys. 2021 Dec 16:1078:57-83. doi: 10.3897/zookeys.1078.73458. eCollection 2021.

Abstract

Two new species, Helocharesguoi Yang & Jia, sp. nov. and Helocharesdistinctus Jia & Tang, sp. nov., are described. Two species are recorded for the first time from China: Helocharesnegatus Hebauer, 1995 from Yunnan, and Helocharesminusculus d'Orchymont, 1943 from Guangdong. Additional faunistic data from China are provided for the following species: Helochareshainanensis Dong & Bian, 2021, Helocharesnipponicus Hebauer, 1995, Helocharessauteri d'Orchymont, 1943, Helocharesdensus Sharp, 1890, Helochareslentus Sharp, 1890, Helocharesneglectus (Hope, 1854) and Helocharesanchoralis Sharp, 1890. The Chinese fauna of Helochares comprises 16 species, 11 of which are illustrated in this contribution. Helocharescrenatus Régimbart, 1921 is removed from the Chinese fauna.

Keywords: New records; Oriental Realm; species distribution; taxonomy; water scavenger beetle.