Sabussowia dioica (Claparede, 1863) Böhmig, 1906

(Fig. 4 g–i)

Habitat. 4 specimens were collected under stones and among algae.

Locality. Salambo, Tunis (35° 50' 38.10'' N; 10° 19' 28.61'' E).

Localities in Tunisia from bibliography. S. dioica was collected for the first time in Salambo (Gulf of Tunis) by Zghal and Tekaya (1980).

Other localities in the world. Spanish Mediterranean coasts (Vila-Farre et al. 2009); France: Normandy (Claparede 1863); Marseille (Chandebois 1954); Plymouth (Gamble 1893b).

Remark. Collected from Gulf of Tunis, this species served as model for regeneration, reproductive and development studies (Tekaya et al. 1996, 1997, 1998, 1999a, 1999b; Tekaya & Zghal 2001a, b). It is one of very few gonochoric flatworm species. Males and females could be distinguished by their external morphology and their internal anatomy (Wilhelmi 1909; Zghal & Tekaya 1980; Sluys 1989).