Description of two new species of freshwater Gammarus Fabricius, 1775 (Amphipoda: Gammaridae) from the Middle Atlas of Morocco

This dataset contains the digitized treatments in Plazi based on the original journal article Piscart, Christophe, Mabrouki, Youness, Taybi, Fouzi A. (2025): Description of two new species of freshwater Gammarus Fabricius, 1775 (Amphipoda: Gammaridae) from the Middle Atlas of Morocco. European Journal of Taxonomy 1026: 123-146, DOI: 10.5852/ejt.2025.1026.3109, URL: europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3109/13869 Abstract.

This study describes, both morphologically and molecularly, two new species, Gammarus latispinus sp. nov. and G. tazekkaensis sp. nov. from the Middle Atlas of Morocco. Both species are similar to Gammarus acalceolatus, but differ by having setae as long as, or longer than, the diameter of the article on the second antenna, lacking calceoli, and by the absence of long setae on merus and carpus of pereopods 5–7. Gammarus latispinus sp. nov. is characterized by the presence of spinules on the outer face of epimeral plates 2 and 3, a pereopod 5 much shorter than pereopods 6 and 7, and telson lobes with dorsal setae but without lateral spines.