OVERVIEW OF SPIDER DIVERSITY IN SEMI-ARID AREAS OF WEST KAZAKHSTAN REGION

Abstract

Based on the literature data, a taxonomic and zoogeographic analysis of the spider fauna of the semi-arid areas of the West Kazakhstan region (WKR) was carried out. At the moment, there are 223 species in the spider fauna of the semi-arid  areas  of the West Kazakhstan region, out of 111 genera of 22 families. The greatest species diversity is characterized by 3 families: Gnaphosidae (47 species; 21.0%), Linyphiidae (32 species; 14.4%) and Salticidae (31 species; 13.9%). 5 families Lycosidae and Philodromidae (17 species each; 7.7%), Araneidae and Theridiidae (16 species each; 7.1%) and Thomisidae (15 species; 6.7%) have high species diversity. Faunal taxonomic index of the West Kazakhstan Region: Gna-Lin-Sal-(Ara-The)- (Lyc-Phi)-Tho. The genera Zelotes, Thanatus, Gnaphosa, Attulus, Xysticus and Pardosa have the highest species diversity in the fauna of the West Kazakhstan region. Palearctic (43.5%) and Ancient Mediterranean (40.8%) species are the most numerous in the fauna of the West Kazakhstan region. The endemism of the fauna is not pronounced. The fauna has an allochthonous character.