Drusia (Escutiella) deshayesii (Moquin-Tandon, 1848) Figs 56–58 Parmacella deshayesi – Moquin-Tandon 1848: 261, pl. 1, fig. 5. Moquin-Tandon 1850: 49, 54, 55, 56 – province d’Oran. Fischer 1856: 380 –398, pl. 5 – Oran. Bourguignat 1861: 47 –54, pls. 4, 5 – Environs d’Oran (Algerie). Blanchard 1891: 215 – Algeria: Orléansville. Seurat 1930: 261 – Algérie. Llabador 1936: 201, 203 – Algeria: Massif des M’sirdas au Sud-Ouest de Nemours. Parmacella dorsalis – Pechaud 1884: 8 – Au village Lamoricière, entre Tlemcen et Sidi-bel-Abbès; Tanger – Not Moquin-Tandon 1848. Parmacella valenciennesi – Hesse 1885: 9 –12 (sic!) – Morocco: Tanger – (Anat.) – (Not Webb & Van Beneden, 1836). Parmacella (Parmacella) deshayesi – Wiktor 1983 b: 83 –85, figs 1–9 – Morocco: Sidi Slimane, oued Elhadar, 3 km S from Taza Haut; Beni Hozmar Mts, ca. 5 km S. of Tetuan. Parmacella (Escutiella) deshayesii – Martínez-Ortí and Borredà 2012: 1 –18, figs 1 a-f, 2 a-d, 3 a-i, 5 a-e, 6 (map) – Oran, Ain Franin, Oran-Kristel road, near the cliff (UTM = YE 2765); Tlemcen (UTM = XD 7372). Drusia (Escutiella) deshayesii – Borredà and Martínez-Ortí 2017: 4, fig. 3 – Ain Franin, road Oran- Kristel, near the diff; Tlemcen. Material examined. • 5 exx; Relizane, El Hamadna; 35°53.633'N, 0°44.033'E; 85 m a. s. l.; 1 March 2022; A. Bekkouche leg. Diagnosis. Body unicolour reddish-brown both in juveniles and adults, with no bands or spots; shell with smooth protoconch and wide, oval spatula; genitalia characterised by a long vas deferens; gradually widening epiphallus; cylindrical penis with a swelling in the middle; short atrium, atrial accessory appendices only slightly unequal and with a big fold inside; very large perivaginal gland; duct of the bursa copulatrix widened at the base; large oval bursa copulatrix. Distribution. Northwest Algeria and northeast Morocco. Ecology. Parmacellids are herbivorous. Remarks. Drusia deshayesii is a well-known species (Wiktor 1983 b; Martínez-Ortí and Borredà 2012).

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