Girardia dorotocephala is a species of dugesiid triclad native to North America.*Tyler S, Schilling S, Hooge M, and Bush LF (comp.) (2006–2012) Turbellarian taxonomic database. Version 1.7 Database It has been accidentally introduced in Japan.Sluys, R., Kawakatsu, M., Yamamoto, K. (2010). "Exotic freshwater planarians currently known from Japan". Belgian Journal of Zoology, 140 (Suppl.). p. 103–109 Girardia dorotocephala is cannibalistic, which led to its usage in memory transfer experiments.
References