Distribution, habitats, and redescription of the rare mite species Iphidonopsis sculptus Gwiazdowicz, 2004 (Mesostigmata: Ascidae) Author Makarova, Olga L. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow 119071, Russia Author Marchenko, Irina I. 0000-0002-9991-9804 Institute of Systematics and Ecology of Animals, Russian Academy of Sciences, Siberian Branch, Frunze str. 11, Novosibirsk 630091, Russia. gamasina @ rambler. ru; https: // orcid. org / 0000 - 0002 - 9991 - 9804 gamasina@rambler.ru Author Lindquist, Evert E. 0000-0003-4528-7642 Canadian National Collection of Insects, Arachnids and Nematodes, Ottawa Research and Development Center, Agriculture & Agri- Food Canada, Ottawa, Canada. lindquistm @ primus. ca; https: // orcid. org / 0000 - 0003 - 4528 - 7642 lindquistm@primus.ca text Zootaxa 2021 2021-04-12 4952 3 448 464 journal article 7280 10.11646/zootaxa.4952.3.2 2838ffe2-1307-428b-8f0c-15a9da30d27e 1175-5326 4690531 FDBB59EE-CA93-4D6B-8E70-554A36D6D01B Genus Iphidonopsis Gwiazdovicz, 2004 Type species: Iphidonopsis sculptus Gwiazdowicz, 2004: 153 , by original designation. Genus based on adult female and male material; includes two described species ( Lindquist & Makarova, 2012 ). Diagnosis. Adults of Iphidonopsis are easy distinguished from those of other genera of Zerconopsini by having a broad, robust anal shield in the female bearing only three circumanal setae, and by a long tubular spermatodactyl in male (its free part 1.5 times longer than movable digit). Adult dorsal shield strongly sclerotised and ornamented in a complicated way (with deep open-work depressions and numerous foveae in central and posterior regions as well as net-like honeycomb pattern in anterior and lateral areas), its lateral margins often turned down ventrally. Dorsal shield lacking paddle-like setae (unlike Zerconopsis ) and tarsus I with ambulacrum and claws (in contrast to Xenoseius and Zerconopsis apodius Karg, 1969 ). Leg I genu and tibia each with seta av -2 present.