Contribution to the fauna of Tydeidae (Acari: Prostigmata) from Western Siberia, Russia

The fauna of Tydeidae of Western Siberia is reviewed. A total of 27 species from eight genera were found in Tyumen and Kurgan Regions. Two species, Lorryia sibiriensis n. sp. and L. speciosa n. sp. are described as new for science; Lorryia evansi Baker is recorded from Russia for the first time and redescribed based on materials from Tyumen Region; Lorryia paravarsoviensis (Momen and Lundqvist), L. subularoides Kazmierski, L. arkadiensis Panou and Emmanouel, L. argutus (Kuznetsov and Petrov) n. comb., L. serpettae (Momen and Lundqvist) n. comb., L. szeptyckii (Kazmierski) n. comb., L. filiformis (Momen and Lundqvist), L. grandiinsignia Kazmierski, Nudilorryia obsequens Kazmierski, Paralorryia formosa (Andre), Calotydeus edwardbakeri (Kazmierski), Tydeus nieuwkerkeni Andre, T. spathulatus Oudemans and Metalorryia delicata (Kuznetsov) are recorded in Russia for the first time. After examination of the holotype of Paralorryia formosa Livshitz this species is moved to Nudilorryia. Morphological characters separating two closely related species, Lorryia catenulata (Thor) and L. polita Kuznetsov, are also provided.

Automated summary

The fauna of Tydeidae in Western Siberia was reviewed, with 27 species from eight genera found. Two new species, Lorryia sibiriensis n. sp. and L. speciosa n. sp., were described. Lorryia evansi Baker was recorded from Russia for the first time and redescribed. Several species were newly recorded in Russia. The holotype of Paralorryia formosa Livshitz was reassigned to Nudilorryia, and morphological characteristics separating two closely related species, Lorryia catenulata (Thor) and L. polita Kuznetsov, were provided.