(Figs. 35-36)
Chinoperla unidentata Sivec & Zwick, 1989:11. Holotype ♂ (PMSL), 9 km W Chiang Dao, Thailand
Material examined. Thailand: Chiang Mai Province, Doi Suthep-Pui National Park, Huai Phalat above road, 1200 m, 98° 54’ N, 18° 48’ E, 10 November 2001, 1♂ (PMSL). Khao Yai National Park, Khao Kheo, 11- 25 November 2000, Korrakot Damrak, 1♂ (PMSL). Khao Yai National Park, Pa Tabak, 25 November- 9 December 2000, Korrakot Damrak, 1♀ (PMSL).
This species was previously reported from Thailand (Sivec & Zwick 1989) from a single male specimen. The aedeagus (as discussed above) is quite similar to those of C. gorohovi and C. sila. The previously unknown female is described below.
Female. Forewing length 10.5 mm. Subgenital plate not produced but hind margin of sternum 8 slightly emarginate mesally (Fig. 35). Bristles on posterior margin of sternum 8 long.
Egg. Tear drop shaped with moderately long collar and stalked anchor. Chorion punctate throughout but punctations finer and more densely packed in subequatorial ring (Fig. 36).
Comments. The female of this species is similar to that of C. sila but in that species the mesal emargination of the subgenital plate is much more conspicuous (Fig. 25) and the egg of that species has the collar about half as long as in C. unidentata; in addition the collar rim is not flanged and the chorion is uniformly punctate in the egg of C. sila (compare Figs. 19-21 and 36).