Pachymerium pilosum (Meinert, 1870) *

Dyachkov, Yurii V. & Bonato, Lucio, 2024, An updated synthesis of the Geophilomorpha (Chilopoda) of Asian Russia, ZooKeys 1198, pp. 17-54 : 17

12. Pachymerium pilosum (Meinert, 1870) *

Geophilus pilosus Meinert 1870: 86.

Geophilus pilosus - Stuxberg 1876a: 32; 1876b: 315; Sseliwanoff 1881: 3; 1884: 76; Daday 1889: 146; Attems 1929: 324.

Geophilus (Pachymerium) pilosus - Attems 1903a: 45; 1903b: 257.

Pachymerium pilosum - Muralewicz 1926: 42; Bonato et al. 2016.

Type locality.

Russia: Sakhalin oblast: "Sartung, paa Oen Sacolin" ( Meinert 1870) = “Sartung” (see Remarks), Sakhalin Isl.

Type series.

Syntypes: 2 specimens, both sexes. Deposited in NHMD.

Diagnosis.

A species of Pachymerium with forcipular coxosternite with very short chitin-lines; forcipular tarsungulum without denticle; 45-49 leg-bearing segments; ultimate metasternite narrow, with subparallel lateral edges; all coxal pores sparse from the ventral to the dorsal sides of the coxopleura.

Distribution.

Eastern Siberia: Krasnoyarsk krai, Irkutsk oblast ( Stuxberg 1876a, 1876b; Sseliwanoff 1881, 1884; Daday 1889). Far East: Sakhalin oblast (Sakhalin Isl.) ( Meinert 1870). Outside Asian Russia: no records.

Remarks.

Sseliwanoff (1884) reported specimens from "near Baikal", collected by G. Dybovskiy. According to the catalogue of Chilopoda of the ZMMU, these specimens were collected from the Kultuk (urban-type settlement in the Irkutsk oblast, 51°43'N, 103°40'E).

The assignment of this nominal species to the genus Pachymerium is only tentative ( Bonato et al. 2016), and is suggested only by the following few characters described by Meinert (1870): head ~ 1.2 × as long as wide, forcipular coxosternite very broad and with two anterior denticles, forcipules surpassing the anterior margin of the head, coxopleura elongate and with dense coxal pores not only on the ventral side but also on the lateral and dorsal ones, ultimate legs slightly longer than penultimate legs and bearing a claw.

The current identity and position of the locality “Sartung” (indicated by Meinert 1870) is uncertain.