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Article
Published: 2018-11-30

Chirocephalus sanhadjaensis sp. nov., a new chirocephalid species (Branchiopoda: Anostraca) from Numidia (Algeria)

Marine Bioresources Laboratory, Marine Sciences Department, Badji-Mokhtar Annaba university, Algeria Sorbonne Université, Muséum national d’Histoire naturelle, UCN, UA, CNRS, IRD, Biologie des organismes et écosystèmes aquatiques, BOREA, UMR 7208, CP26 75231, 43 rue Cuvier, 75005, Paris Cedex 05, France.
Sorbonne Université, Muséum national d’Histoire naturelle, UCN, UA, CNRS, IRD, Biologie des organismes et écosystèmes aquatiques, BOREA, UMR 7208, CP26 75231, 43 rue Cuvier, 75005, Paris Cedex 05, France.
Marine Bioresources Laboratory, Marine Sciences Department, Badji-Mokhtar Annaba university, Algeria
Crustacea Fairy shrimp taxonomy Guerbes-Sanhadja eco-complex endemism North-Africa

Abstract

A new species of Chirocephalus collected in temporary freshwater ponds in Northeastern Algeria is described. Chirocephalus sanhadjaensis sp. nov. seems to be restricted to Ain-Magroun and Belkroun pools (Skikda Province). The most similar species is C. marchesonii Ruffo & Vesentini, 1957, which is endemic to Italy. The new taxon, belonging to the “diaphanus” species group of the genus Chirocephalus, is identifiable from all congeners primarily by the shape of the antennal appendages and that of the apex of the distal antennomere of the antennae. The resting eggs of C. sanhadjaensis sp. nov. are similar to those of C. diaphanus or C. salinus but are larger (448.24 ± 30.93 µm). The restricted distribution of this species confirms the high biological diversity of the area of the Guerbes-Sanhadja eco-complex.

 

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