A new genus, Atrichadenotecnum, is described in the tribe Psocini of the family Psocidae (Psocoptera). Atrichadenotecnum ryukyuense sp. n., A. tayal sp. n., and A. quadripunctatum sp. n. are described and Atrichadenotecnum nudum (Thornton, 1961) comb. n. and Atrichadenotecnum quinquepunctatum (McLachlan, 1872) comb. n. are transferred from the genus Trichadenotecnum Enderlein. The new genus is regarded as the sister-group of the genus Psocus Latreille.