An updated synthesis of the Geophilomorpha (Chilopoda) of Asian Russia Author Dyachkov, Yurii V. https://orcid.org/0000-0001-9256-9306 Altai State University, Lenin Avenue, 61, 656049, Barnaul, Russia & Tomsk State University, Lenin Avenue, 36, 634050, Tomsk, Russia & Western Caspian University, Istiglaliyyat Street, 31, Baku, Azerbaijan dyachkov793@mail.ru Author Bonato, Lucio https://orcid.org/0000-0002-8312-7570 Dipartimento di Biologia, Universita di Padova, via U. Bassi 58 b, 35131 Padova, Italy text ZooKeys 2024 2024-04-23 1198 17 54 http://dx.doi.org/10.3897/zookeys.1198.119781 journal article http://dx.doi.org/10.3897/zookeys.1198.119781 1313-2970-1198-17 BDC5B2CD1BB442AE8672E57CC0FBBF6F 9A0A0A5CD22451C7ADAE5C8460C568DC 3. Arctogeophilus sachalinus Verhoeff, 1934 * Arctogeophilus sachalinus Verhoeff 1934 : 15. Arctogeophilus sachalinus - Takakuwa 1940 : 135; Molodova 1973 : 67; Kurcheva 1977 : 45; Zalesskaja et al. 1982 : 188; Ganin 1997 : 121, 124, 126, 128, 134. Type locality. Russia: Sakhalin oblast: "Insel Sachalin" ( Verhoeff 1934 ) = Sakhalin Isl. Type series. Holotype : male. Depository unknown. Diagnosis. A species of Arctogeophilus with first maxillary lappets relatively long; forcipular denticles only on the trochanteroprefemur and tarsungulum, not on the intermediate articles; 39 leg-bearing segments, possibly invariably; ventral pore-fields on some anterior segments; pretarsus of ultimate legs absent. Distribution. Far East: Sakhalin oblast (Sakhalin Isl.) ( Verhoeff 1934 ; Takakuwa 1940 ; Molodova 1973 ; Kurcheva 1977 ; Ganin 1997 ), Maritime krai ( Kurcheva 1977 ; Ganin 1997 ), and Chukotka autonomous okrug ( Kurcheva 1977 ). Outside Asian Russia: no records. Remarks. It has been suggested that A. sachalinus could be a junior synonym of A. glacialis (Attems, 1909) ( Nefediev et al. 2017a ). More generally, the actual taxonomic status of the populations of Arctogeophilus from the Far East remains to clarify.