A Review of Genus Onycholabis Bates (Coleoptera: Carabidae: Platynini), with Description of a New Species from Western Yunnan, China

Abstract Species in the genus Onycholabis Bates are briefly reviewed and a new species from western Yunnan Province, China is described: Onycholabis stenothorax new species (Type locality: Yunnan, Tengchong, Qushi, Xiangyang Bridge, 25°12′38.4″N/98°34′49.4″E, 1,515 m). Nomenclatural changes proposed include the following: Onycholabis vietnamicus Kasahara and Onycholabis uenoi Paik and Lafer are recognized as junior synonyms of Onycholabis sinensis Bates new synonymies; Onycholabis sinensis nakanei Kasahara is recognized as a distinct species, O. nakanei Kasahara new status; and two species, Onycholabis luzonensis Jedlička and Onycholabis macrops Louwerens are removed from Onycholabis and tentatively transferred to Notagonum Darlington—Notagonum luzonensis (Jedlička) new combination and Notagonum macrops (Louwerens) new combination. A key to adults of all six known species of Onycholabis is provided.