Genus Trychosis Förster, 1869

Trychosis Förster, 1869: 187 . Type species: Cryptus ambiguus Tschek, 1871 (= Cryptus mesocastanus Tschek, 1871). Designated by Schmiedeknecht (1890).

Phaedrophadnus Cameron, 1906: 285 . Type species: Phaedrophadnus striatus Cameron, 1906 . Monobasic.

Ethaemorpha Viereck, 1913: 565 . Type species: Cryptus similis Cresson, 1864 . Original designation.

Orthocryptus Viereck, 1913: 567 . Type species: Cryptus monticola Ashmead, 1890 (= Cryptus sanderi Dalla Torre, 1902). Original designation.

Three species, T. maruyamana (Uchida, 1930), T. tokioensis (Uchida, 1930) and T. yezoensis (Uchida, 1930), have been recorded from Japan. I herein describe a new species, T. breviterebratus sp. nov., from Japan below.