Subgenus Andiorrhinus (Turedrilus) Righi, 1993

Type species. Andiorrhinus (Turedrilus) samuelensis Righi, 1986

Diagnosis. The subgenus Andiorrhinus (Turedrilus) was differentiated because of the presence of two pairs of intestinal hearts in segments 10 and 11 (Righi 1986, 1993). Number of species: 11. Distribution: Venezuela (5), Brazil (3), Colombia (2), and Guyana (1).