“…Stigmaeidae of Western Siberia are currently under intensive study, mostly from Tyumen and Kurgan Oblasts, as well as from the Altai (Khaustov 2020(Khaustov , 2021a. Until now, 31 species of Stigmaeidae have been recorded in Western Siberia, namely: Cheylostigmaeus sp., Eustigmaeus acidophilus (Wood, 1972), E. collarti (Cooreman, 1955), E. ottavii (Berlese, 1910), E. parvisetus (Chaudhri, 1965), E. pinnatus (Kuznetsov, 1977), E. rhodomelus (C. L. Koch, 1841), E. segnis (C. L. Koch, 1836), E. summersi Khaustov, 2021, E. tjumeniensis Khaustov and Tolstikov, 2014, Mediolata pini Canestrini, 1889, M. uspenskii Kuznetsov and Sizova, 1978, Stigmaeus akimovi Khaustov, 2021, S. corticeus Kuznetsov and Wainstein, 1977, S. delaramae Khanjani, 2014, S. dignus Kuznetsov, 1978, S. fimus Doğan, Doğan and Erman, 2017, S. fusus Summers, 1962, S. harsitensis Doğan, Doğan and Erman, 2017, S. livshitzi Kuznetsov, 1977, S. longipilis (Canestrini, 1889, S. mitrofanovi Khaustov, 2014, S. mollibus Khaustov, 2016, S. pilatus Kuznetsov, 1978, S. purpurascens Summers, 1962, S. scrobiculatus Khaustov, 2021, S. silvestris Khaustov, 2014, S. sphagneti (Hull, 1918, S. tolstikovi Khaustov, 2015, S. uzunolukensis Özçelik andDoğan, 2011, Villersia jamaliensis (Khaustov, 2014) (Khaustov and Tolstikov 2014;Khaustov 2014;2015, 2019, 2020…”