Aquarius najas (De Geer, 1773) *

Material examined. Oued Ouzej, 30.0 4.16, 1 m; Debdou, 27.0 4.16, 1 f; Sources O. El Bared, 27.0 3.14, 1 m; Petite cascade, 19.0 3.14, 1 m, 2 ff; Missour, 0 2.0 5.14, 1 m, 2 jj; Anzar Oufounas, 0 2.0 5.14, 1 f.

Distribution. This is a Europeo-Maghrebian species. In Morocco, it is linked to medium and high elevations (L’Mohdi 2016). However, our collections extend considerably the elevational range of this species (168 m, Oued Ouzej). This is the first time that A. najas has been recorded in the Moulouya River basin and the Oriental Region (Fig. 2). Damgaard (2006) pointed out a possible hybridization between A. najas and A. cinereus .