New data on spiders (Arachnida: Aranei) of the Central Yamal Peninsula, with notes on biotopic preferences of the dominant species

is the ABSTRACT: Studying the local fauna of spiders in the vicinity of the Seyakha village (Yamal Peninsula, Siberian Arctic), I identified a total of 47 species be-longing to seven families. Five species ( Agyneta decora , A. ripariensis , Masikia caliginosa , Metopobactrus prominulus , and Walckenaeria clavicornis ) have been recorded for the fauna of Yamal for the first time. The fauna of the Southern, Central, and Northern Yamal differ in species richness (comprised of a total of 165, 61, and 36 species, respectively). I compared the effectiveness of estimations of the species richness for spiders at high latitudes using pitfall traps and a sifter and found no significant differences between these methods. The composition of the dominant species differed between the sample sets collected using pitfall traps and a sifter, although all of these species were present in both sample sets. I found no clear biotopic preferences for populations of the majority of dominant spider species in the Central Yamal.