Pachymerium C.L. Koch, 1847

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

Genus Pachymerium C.L. Koch, 1847

Diagnosis.

Geophilids with head distinctly elongate; clypeal areas distinct; labral side-pieces distinctly separated by an intermediate part; second maxillary coxosternite medially long and sclerotized, without both statuminia and anterior inner processes; second maxillary pretarsus claw-like; forcipular tergite distinctly narrower than subsequent tergite, with pleurites exposed dorsally; forcipular coxosternite relatively broad posteriorly, with coxopleural sutures subparallel in their anterior half; forcipular trochanteroprefemur distinctly elongate, with distal denticle; chitin-lines present but short; forcipular tarsungulum with basal denticle; trunk sternites without “carpophagus” structures; ventral pore-fields present at least on the anterior part of the trunk, two paired anterior groups and a posterior entire transverse band on each sternite; metasternite of ultimate leg-bearing segment approximately as long as wide or longer than wide; coxopleura with sparse pores; legs of the ultimate pair with claw-like pretarsus. See Table 4 .