Material examined. Ait Boulmane, 14.0 7.14, 2 mm, 1 j; Ait Oha Ohaki, 14.0 7.14, 3 ff, 3 jj; Arbalou, 0 3.0 5.14, 3 mm; Boumia, 0 2.0 5.14, 2 mm, 2 jj; Anzar Oufounas, 0 2.0 5.14, 5 mm; Aval Ansegmir, 0 2.0 5.14, 3 mm; Sebra, 0 3.0 4.14, 1 m; Amont Gafait, 17.0 5.14, 2 mm, 2 ff; Pont Gafait, 0 7.0 8.14, 3 ff; Amont Taourirt, 0 7.0 6.14, 3 mm, 5 ff; Barrage Za, 19.0 7.14, 23 mm/ff; Sources O. El Bared, 0 1.0 6.14, 2 mm, 3 ff; Amont O. El Bared, 23.0 3.14, 1 m, 1 f; Douar Ifrane, 0 7.0 8.14, 3 jj;. Sources Berkine, 27.0 3.14, 2 mm, 3 jj; Amont Berkine, 15.0 8.14, 4 jj; Jbel Mehser, 19.0 9.15, 3 mm; Debdou, 18. 11.15, 10 mm/ff; Amont Himer, 18. 11.15, 3 jj; Source Zeghzel, 0 1.0 2.15, 14 mm/ff; Ain Sfa, 0 1.0 2.15, 3 mm; Ain Almou, 0 6.0 6.16, 1 m, 1 f; Cherraa, 0 6.0 6.16, 2 ff; Jbel Sidi Moussa, 29.0 5.17, 3 mm; Amont Bni Waklane, 31.0 5.17, 2 ff, 3 jj; Laâyoune, 31.0 5.17, 1 m; Mont Gourougou, 7.0 2.15, 24 mm/ff/jj; Oued Oumassine, 12.0 5.16, 1 m, 1 f; Oued Mariouari, 12.0 5.16, 1 j; Barrage Sfissef, 21.0 5.16, 3 mm; Figuig, 22.0 5.16, 13 mm/ff; O. Abbou Lekhal, 22.0 5.16, 3 ff; Anwal, 20. 11.16, 1 f; Oued Aït Aïssa, 21. 11.16, 2 mm, 1 j; Bouânane, 22. 11.16, 1 f.
Distribution. Centroasiatic-Europeo-Mediterranean species, widely distributed in the northern part of Morocco (L’Mohdi, 2016). In the Oriental Region, H. stagnorum was known only in Zeghzel River (Chavanon et al., 2004). Our work makes possible to increase considerably its presence (see Fig. 4).