Palatov D.M., Marin I.N. 2023. Diversity of the Caucasian genus Diasynurella Behning, 1940 (Amphipoda: Crangonyctidae) with description of four new species // Arthropoda Selecta. Vol.32. No.1: 23–55 [in English].

A.N. Severtsov Institute of Ecology and Evolution of RAS, Moscow 119071, Russia. E-mails ,

doi: 10.15298/arthsel.32.1.03

ABSTRACT. Four new species of the Caucasian crangonyctid genus Diasynurella Behning, 1940 (Crustacea: Amphipoda: Crangonyctidae) are described from stygobiotic habitats of the Russian Federation, Georgia and Armenia based on an integrative approach. The interspecific genetic divergence (by COI mtDNA gene marker) between newly discovered species of the genus vary from 17 to 31%, which indicate long-time isolation, starting at least since the Pliocene. The article discusses the morphology, phylogeny and distribution of these species, as well as a differential key for all species is provided. DNA barcoding data are presented for all species of the genus for the first time.

KEY WORDS: Crustacea, Amphipoda, Crangonyctidae, Diasynurella, diversity, phylogeny, hypogean, Caucasus, Palaearctic.

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