Mabrouki Y.1, Glöer P.2, Taybi A.F.3 2023. The Theodoxus Montfort, 1810 species of North Africa (Gastropoda: Neritidae) with the description of a new species // Invertebrate Zoology. Vol.20. No.4: 401–410 [in English].

1 Sidi Mohamed Ben Abdellah University, Faculty of Sciences, Dhar El Mehraz, Laboratory of Biotechnology, Conservation and Valorization of Natural Resources, Fes, Morocco. E-mail:

2 Schulstrasse 3, D-25491 Hetlingen, Germany.

3 Mohammed First University, Multidisciplinary Faculty of Nador, Applied Biology and Biotechnology Research Team, Morocco.

doi: 10.15298/invertzool.20.4.05

ABSTRACT: The species richness of the freshwater gastropods in Morocco is one of the highest in North Africa. Theodoxus sandsi sp.n. is a new gastropod from Morocco, which can be distinguished from its congeners by shell morphology and operculum criteria. The new species was found in the Middle Atlas massif, a cornerstone of the freshwater biodiversity in Morocco and North Africa in general. In addition, we discuss the taxonomic status of the problematic Theodoxus spp of Northern Africa.

KEY WORDS: Neritidae, freshwater biodiversity, Middle Atlas, Morocco; endemism.

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