Synonym djedida Pallary, who writes: « Shell small, semi-globular, opaque, smooth, of a beautiful shiny black. Spire very little protruding and almost always eroded. Whorls three, very convex; the last one very large. Aperture rounded, inside blueish-white. Columellar plate a little excavated in the middle. » – P. Pallary: “Récoltes malacologiques du capitaine Paul Martel dans la partie septentrionale du Maroc”, Journal de Conchyliologie vol.65, p.155. The shell can be uniformly coloured as well as patternened, and is highly variable in colour.
Above: shallow water under stone, Oued Fes, Fès-Meknès Region, N. Morocco. 6,4mm.
« This species differs from N. numidica as it is represented by Bourguignat in his Mal. alg. (cf. infra) by its higher first whorls, its penultimate more globular, wider, and by its little less rounded aperture. » – Ibid. Very thin axial microsculpture. The spire height is also a little variable, but the shell is never flattened like that of fluviatilis. – Same spot. 7,2mm.
« The species Th. djedida and Th. maroccanus occur in the same region, both shells are globular and of the same size according to the original descriptions, and the figures of the types look similar. We therefore suggest that Th. djedida is a junior synonym of Th. maroccanus. » – Mabrouki, Glöer & Taybi: “The Theodoxus Montfort, 1810 species of North Africa (Gastropoda: Neritidae) with the description of a new species”, Invertebrate Zoology vol. 20(4), 2003, p.403.
« The species Th. djedida and Th. maroccanus occur in the same region, both shells are globular and of the same size according to the original descriptions, and the figures of the types look similar. We therefore suggest that Th. djedida is a junior synonym of Th. maroccanus. » – Mabrouki, Glöer & Taybi: “The Theodoxus Montfort, 1810 species of North Africa (Gastropoda: Neritidae) with the description of a new species”, Invertebrate Zoology vol. 20(4), 2003, p.403.