Compsoneuriella langensis (Braasch & Boonsoong, 2010) comb. nov.

Compsoneuria langensis Braasch & Boonsoong, 2010, Zootaxa 2610, p. 7 (adult, nymph)

Material examined. 2 nymphs, Thailand, Mae Hong Son Province, Soppong, Nam Lang River, 605 m., 19° 34.447’ N, 98° 16.727’ E, 3–25. IV. 2003, D. Braasch leg. [MZL]

Discussion. The species has been adequately described by Braasch & Boonsoong (2010), and differs from the two previous ones by its labrum less expended laterally (Fig. 71), by the shape of the glossae, with inner margin regularly convex and outer margin slightly concave (Fig. 72), the inner margin of the fore femora with a row of spines and fine and long setae, the presence of microdenticles on the posterior margin of the abdominal tergites, and by the presence of 2 subapical teeth on the tarsal claw. Contrary to what has been previously illustrated (Braasch & Boonsoong 2010: Fig. 45), gill VII is not obtusely rounded but is apically narrowly pointed (Fig. 73). Finally the overall body coloration and pattern is not as contrasted as in the previous species.