Abstract
Thirteen species belonging to seven genera of the tribe Nygmiini are recognized from Nanling National Nature Reserve, Guangdong province, China. A new species, Arna bicostata sp. nov., is described, and two species are transferred as new combinations:Artaxa angulata comb. nov. and Toxoproctis croceola comb. nov.. Adults and their genitalia are illustrated.The tribe Nygmiini of Lymantriinae proposed by Hollo way (1999) is a group occurring primarily in the Old World, and comprises 16 genera. The group is well defined by the seventh abdominal segment of the female, which is expanded and membranous, with a strong corethrogyne, the scales from which are used to protect the egg mass (Holloway, 1999, 2001).