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Issue: Vol. 5418 No. 3: 29 Feb. 2024
Type: Article
Published: 2024-02-29
DOI: 10.11646/zootaxa.5418.3.2
Page range: 223-239
Abstract views: 32
PDF downloaded: 7

Two new genera and species of the valvatiform hydrobiid snails (Caenogastropoda: Truncatelloidea: Hydrobiidae) from Morocco

Muséum d’Histoire Naturelle de Marrakech; Université Cadi Ayyad; Faculté des Sciences Semlalia; Laboratoire EauBiodiCC; BP 2390 Marrakech; Morocco
Department of Malacology; Institute of Zoology and Biomedical Research; Jagiellonian University; Krakow; Poland
Muséum d’Histoire Naturelle de Marrakech; Université Cadi Ayyad; Faculté des Sciences Semlalia; Laboratoire EauBiodiCC; BP 2390 Marrakech; Morocco
Department of Comparative Anatomy; Institute of Zoology and Biomedical Research; Jagiellonian University; Krakow; Poland
Muséum d’Histoire Naturelle de Marrakech; Université Cadi Ayyad; Faculté des Sciences Semlalia; Laboratoire EauBiodiCC; BP 2390 Marrakech; Morocco
Muséum d’Histoire Naturelle de Marrakech; Université Cadi Ayyad; Faculté des Sciences Semlalia; Laboratoire EauBiodiCC; BP 2390 Marrakech; Morocco
Muséum d’Histoire Naturelle de Marrakech; Université Cadi Ayyad; Faculté des Sciences Semlalia; Laboratoire EauBiodiCC; BP 2390 Marrakech; Morocco
Department of Malacology; Institute of Zoology and Biomedical Research; Jagiellonian University; Krakow; Poland; Department of Invertebrate Evolution; Institute of Zoology and Biomedical Research; Jagiellonian University; Kraków; Poland
Mollusca mtDNA cytochrome oxidase nuclear 18S shell penes stygobiont molecular phylogeny Pliocene Flooding

Abstract

Stygobiont and crenobiont minute gastropods representing the family Hydrobiidae (Caenogastropoda: Truncatelloidea), characterized by the valvatoid low-spired shell, were collected from one spring and four wells in Bouregreg region, NW Morocco. The shells were photographed and measured; shell biometry is illustrated with principal component analysis. Penes were illustrated and described. Mitochondrial cytochrome oxidase subunit 1 (COI) and 16S rRNA, as well as nuclear 18S rRNA sequences were used to infer the phylogeny. The snails represented two genera, both new to science. Their closest relatives were taxa from the Iberian Peninsula, the rough molecular estimate of the time of divergence between these Moroccan and Iberian genera coincided with the Pliocene Flooding, which restored the Strait of Gibraltar to connect the Mediterranean Basin with Atlantic Ocean.

 

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