Key for Identification of the World Species of Hauchiella

1. Nephridia present, visible through transparent body wall, with or without associated papillae......................... 2

- Nephridia inconspicuous or absent, not visible through the body wall..................... Hauchiella tentaculata n. sp.

2. (1) Genital papillae present on segments 6–8................................................... Hauchiella tribullata

- Papillae absent, nephridial sacs visible through the body wall, with minute pores..................... Hauchiella renilla