Subfamily Monochromadorinae Andrássy, 1958

Udonchinae Eyualem & Coomans, 1996: 213.

Diagnosis

Cheilostom with twelve longitudinal rugae; stoma with three denticles, which are arranged in two separate groups at two levels; female reproductive system monodelphic.

Type and only genus

Udonchus Cobb, 1937 .