Owa, S. O. (1994). Descriptions of two new Iridodrilus species and a re-examination of the earthworm genera Heliodrilus Beddard, Iridodrilus Beddard and Segunia Sims (Annelida: Oligochaeta: Eudrilidae). Journal of Natural History. 28(1): 9-25.
Descriptions of two new Iridodrilus species and a re-examination of the earthworm genera Heliodrilus Beddard, Iridodrilus Beddard and Segunia Sims (Annelida: Oligochaeta: Eudrilidae)