Published as part of Ramdini, Ramdane, Liberto, Fabio, Sadouk, Ghania, Gregorini, Armando & Colomba, Mariastella, 2026, Contributions to the knowledge of slugs and semi-slugs (Gastropoda, Pulmonata, Stylommatophora) from Algeria, pp. 307-348 in ZooKeys 1270 on pages 307-348, DOI: 10.3897/zookeys.1270.156458

SubgenusTestacellaLamarck, 1801 Diagnosis. Body wide, rather flat (length ≤ 45 mm, width 10–15 mm) with two evident dorsal grooves, orange-brown (Fig. 40); shell Haliotis - like, reduced, and rather thick, external, and situated near the posterior end of the body (Fig. 41).