Apertochrysa sp. 1

(Figs 15–16, 55)

Diagnosis

Apertochrysa sp. 1 is unique among the congeners in Pakistan by the following characters: body green, unmarked; scape and pedicel yellow, unmarked; vertex with distinct red markings on the postorbital sclerite in dorsal view; male gonapsis (alcestes group) with a pair of broad lateral wings and a long and slender central stem.

Description

Measurement (♂ n=1). Forewing: length 10.5 mm, width 3.6 mm; hindwing (damaged); body length: 6.2 mm.

Head (Figs 15B–C). Vertex moderately raised, yellow, unmarked. Postorbital sclerite with a pink spot in dorsal view. Frons unmarked. Clypeus with lateral brownish stripes. Interantennal marking absent. Labrum with short yellow setae. Genae with a broad median transverse reddish stripe. Maxillary and labial palpi pale yellow, terminal labial palpi dark brown, covered with short yellow setae. Antennal toruli yellow. Antennae shorter than forewing, brownish yellow, unmarked, covered with short black setae.

Thorax (Fig. 15E). Pronotum slightly wider than long (length 0.67 mm, width 0.77 mm), unmarked, covered with long yellow setae. Meso- and metanotum sparsely covered with short yellow setae.

Legs (Fig. 15F). Pale unmarked, covered with short brownish setae. Pretarsal claws with basal dilation 1/2 length of hook of claw (Fig. 15D).

Wings (Fig. 15A). Veins brownish, cross veins with a median yellow band, covered with short brownish setae. Forewing: Costal area relatively narrow at both ends, slightly wider at the longest subcostal veinlets (3–10). Subcostal area with three crossveins below pterostigma. Pterostigma indistinct. Nine radial cells (r cell). Three Banksian cells (b cell); four lower Banksian cells (b’ cell). Basal crossvein between Rs and M (r-m) straight, meets at subdistal margin of im cell. Two series of gradates, inner gradates not meeting psm; dark brown; four inner gradates (ig) and five outer gradates (og). Two intramedian cells; first intramedian cell (im1) ovate. Second (m2) and third (m3) median cells of similar size. Three intracubital cells (two closed); first cubital crossvein proximal to second mediocubital crossvein (m-cu2); first (icu1), second (icu2) and third (icu3) intracubital cells of similar size. Hindwing: Veins pale brown; cross veins with a median yellow band.

Abdomen (Figs 15E–F). Tergum and sternum covered with short yellow setae.

Male genitalia (Figs 16A–H). Tergum 8 (T8) quadrated in lateral view. T9+ectoprocts quadrate in lateral view, covered with pale yellow setae. Dorsal arm of apodeme (da) on T9+ectoproct arcuated, not extending beyond callus cercus; submarginal apodeme (sa) of S9 straight. Callus cerci (cc) oblong, with 27 trichobothria. S8+9 fused, rounded at apex. Tignum (ti) arcuated; acumen (ac) small, without setae. Gonapsis (gps) with a butterfly-shaped, median plate consisting of long ventral scale-like projection. Gonarcus (gon) arcuated with a pair of short entoprocessus (ent) at lateral margins. Arcessus (arc) small, rounded in ventral view. Hypandrium internum (hi) V-shaped in dorsal view. Vela (vel) as long as hypandrium internum, conical in ventral view.