11. Pachymerium ferrugineum (C.L. Koch, 1835)

Geophilus ferrugineus - Sseliwanoff 1884: 77.

Pachymerium ferrugineum - Titova 1969: 166; Zalesskaja et al. 1982: 187; Ganin 1997: 105, 112, 116, 146; Farzalieva 2008: 61; Sergeeva 2013: 530; Zuev 2016: 36; Zuev and Evsyukov 2016: 424; Bukhkalo et al. 2014: 73; Volkova 2016: 673; Dyachkov 2018a: 252; Nefediev et al. 2017a: 11; Dyachkov and Tuf 2019: 26; Dyachkov 2020: 79; 2022: 71; 2023: 1077; Dyachkov and Nedoev 2021: 42; Dyachkov et al. 2022: 73; 2023: 63; Dyachkov and Farzalieva 2023: 228.

Type locality.

Germany: Arklee, near Regensburg (Bonato and Minelli 2014).

Diagnosis.

A species of Pachymerium with two paired clypeal areas; forcipular coxosternite with chitin-lines, which extend for most part of the length of the coxosternite, but do not reach the anterior margin; both forcipular trochanteroprefemur and tarsungulum with relatively small denticles; 41-69 leg-bearing segments; ventral pore-fields present, also on the posterior part of the trunk, where they are reduced to two paired posterior groups on each metasternite; ultimate metasternite trapezoidal, approximately as long as wide, distinctly tapering towards the posterior margin; all coxal pores sparse from the ventral to the dorsal sides of the coxopleura.

Distribution.

Western Siberia: Chelyabinsk, Sverdlovsk, Tyumen, and Tomsk oblasts, Altai krai (Zalesskaja et al. 1982; Farzalieva 2008; Sergeeva 2013; Bukhkalo et al. 2014; Nefediev et al. 2017a). Far East: Amur oblast, Jewish autonomous oblast, and Maritime krai (Zalesskaja et al. 1982; Ganin 1997). Outside Asian Russia: Western Palaearctic.