Psechrus Thorell 1878

The genus was revised by Levi (1982) and by Wang & Yin (2001) for China. Later, two additional species were described by Chen et al. (2002: P. xinping) and Yang et al. (2003: P. triangulus). From the material collected in Laos two new species were recognised and are described below. Two female specimens from Tham Seua, Luang Prabang Prov. and Tham Pasat Thia, Luang Nam Tha Prov. (ex coll. H. Steiner) could not be identified. Males are necessary to make statements on their taxonomic status.