Chinoperla gorohovi, Sivec & Stark, 2010

Sivec, Ignac & Stark, Bill P., 2010, Five New Species Of Chinoperla Zwick (Plecoptera: Perlidae) From Vietnam And Thailand, Illiesia 6 (8), pp. 62-74 : 63

Chinoperla gorohovi sp. n.

( Figs. 1-4 )

Material examined. Holotype ♂ and 3♂ paratypes from Tam Dao , Vietnam, 600-900 m, 17-31 May 1995, A.V. Gorohov ( PMSL).

Adult habitus. Biocellate. Ocelli relatively large, about two diameters apart and slightly closer to each other than to the compound eye margin. Head uniformly dark brown, antennae and palpi brown. Pronotum brown, wider than long and with dark rugosities. Wings and veins dark brown. Femora pale in proximal half, distal half of femora, tibiae and tarsi uniformly dark brown. Cerci brown.

Male. Forewing length 9.5 mm. Dark median process of tergum 9 very slender, about 3 times long as wide and slightly enlarged on posterior margin ( Fig. 1 ). Finger shaped hemitergal processes about 2.5 times long as basal width. Aedeagal tube poorly sclerotized; sac terminating in an upturned dorsal membranous lobe and a spinose lobe bearing a long slender spine ( Figs. 2-4 ).

Female. Unknown.

Larva. Unknown.

Etymology. The patronym honors Dr. A.V. Gorohov of St. Petersburg, collector of the type material.

Diagnosis. The aedeagus of this species is similar to that of C. unidentata Sivec & Zwick and to C. sila (described below) in having a single long slender spine. In this species the dorsal aedeagal lobe is significantly larger than in C. unidentata ( Fig. 2 ) and the median process of tergum 9 is much longer in this species ( Fig. 1 ) than for either of its related congeners ( Sivec & Zwick 1989).

Figures

Figs. 1-4. Chinoperla gorohovi. 1. Male terminalia. 2. Aedeagus lateral. 3. Aedeagus dorsal. 4. Aedeagal spine.