Chinoperla spinata Sivec & Stark 2010, sp. n.

Chinoperla spinata sp. n.

(Figs. 26-34)

Material examined. Holotype ♂ from Thailand, Phrae Province, Wieng Ko Sai, Upper Nam Panjanae, 295 m, 99° 34’ N, 17° 57’ E, 21-22 April 2003, Chiang Mai University Team (PMSL). Paratypes: Thailand: Phrae Province, Wieng Ko Sai, Lower Nam Panjanae, 270 m, 99° 34’ N, 17° 56’ E, 20-21 February 2003, 1♀ (PMSL). Huey Nam Ru, 1400 m, 18 April 1989, H. Malicky, 1♀ (PMSL).

Adult habitus. Biocellate. Head dusky brown on occiput, dark brown over most of frons; M-line and callosities pale; antennae and palpi uniformly brown (Fig. 26). Pronotum pale brown with darker rugosities. Legs brown, distal part of femora and proximal part of tibiae darker.

Male. Forewing length 5 mm. Dark median process of tergum 9 shaped like a goblet (Fig. 27). Finger shaped hemitergal processes about 2.5 times long as basal width. Aedeagal tube poorly sclerotized; sac plump, apex bearing a dense patch of larger spines and a median, large, recurved hook (Figs. 28-29); a pair of spiny lateral lobes located subapically on sac.

Female. Forewing length 11 mm. Subgenital plate scarcely produced but a prominent median notch occurs on posterior margin of sternum 8, and a brush of enlarged setae is positioned anterior to notch (Fig. 30).

Egg. Tear drop shaped with long, slender collar and stalked anchor. Chorion covered with fine punctations (Figs. 31-34).

Larva. Unknown.

Etymology. The species name refers to the prominent aedeagal spine of this species.

Diagnosis. The aedeagus of this species is generally similar to those of C. porntip and C. yi. It differs from the former in lacking a distinct sagittate aedeagal apex (compare Figs. 6-8 and 28-29), and from the latter it differs in having smaller, and more posteriorly directed, lateral lobes of the aedeagal sac (compare Figs. 6 and 39).