This dataset contains the digitized treatments in Plazi based on the original journal article Marin, Ivan N., Palatov, Dmitry M. (2025): Niphargus Schiödte, 1849 (Crustacea, Amphipoda, Niphargidae) is a new component of the biotic community in the deep pebble beach habitats of the northern Black Sea region. ZooKeys 1254: 283-311, DOI: 10.3897/zookeys.1254.165665
Abstract
A new species of the genus Niphargus Schiödte, 1849 (Crustacea: Amphipoda: Niphargidae) is described from the deep pebble beach interstitial habitats along the northern Black Sea coastline, revealing a new type of environment for this amphipod genus and providing new insight into the diversity of this unusual biotope. Niphargus primoricus sp. nov. belongs to “ stygius – longicaudatus ” species group corresponds to a distinct phylogenetic lineage, recently called “ tarkhankuticus ” ingroup (clade), which currently includes several species from the coastal areas of the Black Sea (Crimean Peninsula, southern Caucasus, and northern coast of the Republic of Türkiye [Turkey]). Molecular genetic analysis revealed that the speciation within this ingroup started in the Pliocene, approximately 5.76–3.6 Mya, and correlated with the Black Sea transgression. The divergence of the “ tarkhankuticus ” clade from the related European congeners probably occurred in the Late Miocene (~ 11–10 Mya), and is likely related to the separation of the Paratethys into different basins (Euxinian, Alpine and Pannonian). The new species has a wide distribution, currently inhabiting nearly 190 kilometers along the Black Sea coastline, from Gelendzhik to Khosta, and is characterized by a low level of genetic divergence between populations. The deep pebble interstitial coastal biotopes in the area are also inhabited by specific gammarid amphipods, for example, Dursogammarus dromaderus Marin & Palatov, 2022 and Litorogammarus dursi Marin, Palatov & Copilaş-Ciocianu, 2023 (Amphipoda: Gammaridae), whose biology has not been studied, and it is unknown how they spread along the coastline.
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