Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2018). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Newzealandia graffii nigrescens (Dendy, 1901). Accessed at: http://www.marinespecies.org/turbellarians/aphia.php?p=taxdetails&id=485041 on 2024-05-03
original description(ofGeoplana graffii nigrescens Dendy, 1901)Dendy, A. (1901). Notes on New Zealand land planarians. Part IV. Trans. New Zealand Institute, 33: 222-240 page(s): 230-231 [details]
Present Inaccurate Introduced: alien Containing type locality