Spiders (Aranei) of Wrangel Island, Russia. 1. New data on the species composition and distribution

Abstract

Lycosidae (5), Salticidae (1), Theridiidae (2), Thomisidae (1 species). The longitudinal character of the fauna defines the dominance of species with Siberian-Nearctic (39%) and Siberian (30%) ranges, whereas the latitudinal one determines the abundance of species with mainly arctic and arcto-alpine/montane distribution type (81%). At the same time, Wrangel Is. is the only place of finding for 20 species (35%) in the High Arctic. Basically all of them are confined by the island areas with most favorable mesoclimatic conditions.

On the synonymy of Dactylopisthoides Eskov, 1990 and Uusitaloia Marusik, Koponen & Danilov, 2001 (Araneae, Linyphiidae)

“…To date, this species is known from Wrangel Island only ( Khruleva et al 2022 ). Yet, the records of D. hyperboreus from Chukotka Peninsula ( Marusik 1993 ) are likely to also refer to D. wrangelianus .…”

Unexpected diversity of wandering spiders (Aranei: Gnaphosidae, Philodromidae, Salticidae) of Northeastern Siberia

“…We include for comparison three well-studied islandic faunas: Iceland [Agnarsson, 1996], Greenland [Marusik et al, 2006], Wrangel Island [Khrulyova et al, 2022] and four local faunas lying at similar latitudes in Eurasia: Abisko, Sweden [Holm, 1950], Kevo, Finland [Koponen, 1984], Polar Ural [Esyunin, 2015], Putorana Plateau [Eskov, 1988], and the lower Kolyma [Marusik et al, 1992;Marusik, Alfimov, 2012;Alfimov, Marusik, 2022] (Fig. 1).…”

The first description of the male of Oreonetides badzhalensis Eskov, 1991 (Aranei: Linyphiidae)

“…beringianus Eskov, 1991, were described simultaneously from only female material from the Khabarovsk Province, and the Magadan Area and Chukotka, Russia, respectively [Eskov, 1991]. The male of O. beringianus Eskov, 1991 has recently been described from the Yamal Peninsula [Tanasevitch, 2022], also reported from the Wrangler Island, Russia [Khruleva et al, 2022].…”