Proasellus precaspius, Palatov, Dzhamirzoev et Sokolova, 2023

Marin, Ivan N. & Sinelnikov, Sergey Yu., 2024, A new species of the genus Proasellus (Crustacea: Isopoda: Asellidae) from the Abin River basin, with the preliminary data on the diversity of the genus in the southwestern foothills of the Russian Caucasus, Invertebrate Zoology 21 (1), pp. 81-93 : 84-85

P. precaspius

0.151 0.149 0.133 0.141 0.137 0.169 0.181 0.154

Proasellus sp. Karachaevo- Cherkessiya 0.128 0.130 0.121 0.111 0.125 0.122 0.175 0.131 0.101 Plus continuous-flow mass spectrometer (Thermo Electron GmbH, Bremen, Germany) coupled with an elemental analyzer (Thermo Flash 1112, Thermo Electron) at the Joint Usage Center at the A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences.The isotopic composition of N and C was expressed in the δ-notation relative to the international standard (atmospheric nitrogen or VPDB): δX(‰) = [(Rsample/Rstandard) − 1] × 1000, where R is the ratio of the heavier isotope to the lighter isotope. Samples were analyzed with reference gases calibrated against IAEA (Vienna, Austria), reference materials USGS 40 and USGS 41 (glutamic acid). The drift was corrected using internal laboratory standards (acetanilide, casein). The standard deviation of δ 15 N/δ 13 C values in are laboratory standards (n=8) was <0.15‰.

Standard abbreviations: A — antenna; Ep — epimeral plate; Gn — gnathopods; M — maxilla; Mx — maxilliped; P — pereopod; PL — pleopod; Pp — pereopods; T — telson; U — uropod; Ur — urosomite.