Arrup Chamberlin, 1912

Published, First, 2007, The Mecistocephalidae of the Japanese and Taiwanese islands (Chilopoda: Geophilomorpha), Zootaxa 1396, pp. 1-84 : 7

Arrup Chamberlin, 1912

Mecistocephalids with 41 leg­bearing segments. Two clypeal plagulae, separated by a mid­longitudinal areolate stripe and not extending to the lateral margins of the clypeus. Spiculum absent. Buccae without setae. Posterior alae of the labrum without longitudinal stripes, without a distinct series of marginal notches and without a marginal fringe. Coxosternum of the first maxillae undivided, without a mid­longitudinal suture. Coxosternum of the second maxillae undivided; groove from the metameric pore reaching the posterior corner of the coxosternum. Telopodites of the second maxillae poorly developed, not distinctly overreaching those of the first maxillae; a simple claw either present or absent. Forcipular tergum distinctly wider than long, without a distinct mid­longitudinal sulcus. Forcipular article I with one distal tooth, tarsungulum with one, basal tooth. Sternal sulcus of trunk segments not furcate. Coxopleura of the last leg­bearing segment without a macropore distinct from the other pores. Last pair of legs as slender in males as in females, bearing one short subapical spine.

Number of known species: 16, of which 9 occur in the area considered.