Kakuna taibaiensis Ren & Qin

Macropterous male: Body length: male 5.82–5.91 mm; forewing length: male 5.06–5.13 mm (n=2). Color. General color brown. Ocelli reddish brown, eyes black. Dorsum of body with a milky longitudinal stripe from the junction of Y-shaped carina to the middle of posterior margin of forewing. Forewing yellowish brown, membrane has a large, longitudinal, fuscous marking from base of costal area to apex, veins fuscous, longitudinal veins ornamented with blackish brown granules. Abdomen fuscous. Fore and middle legs brown, hind legs yellowish brown, apices of spines on tibiae and tarsi black. Structure. Head including eyes narrower than pronotum (about 0.81:1) (Figs 1, 3). Vertex shorter in midline than wide at base (about 0.82:1), narrower at apex than at base (about 0.78:1), lateral margins slightly concave in dorsal view, submedian carinae convex, originating from near 1/3 base of lateral carinae and uniting at apex of vertex (Figs 1, 3). Y-shaped carina distinct, basal compartment shallowly concave (Fig. 3). Fastigium rounded (Fig. 2). Frons longer in midline than maximum width about 2.05:1, widest above the level of ocelli, median carina conspicuous, forked at extreme base (Fig. 4). Postclypeus wider at base than frons at apex, post- and anteclypeus together approximately 0.86 × of the length of frons (Fig. 4). Rostrum almost reaching mesotrochanters. Antennae terete, nearly attaining middle level of postclypeus, scape longer than wide at apex (about 1.83:1), shorter than pedicle (about 0.52:1) (Fig. 4). Pronotum in midline slightly shorter than length of vertex (about 0.79:1), lateral carinae developed, slightly curved, not reaching posterior margin (Fig. 3). Mesonotum medially ca. 1.64 times longer than vertex and pronotum together, lateral carina almost straight, reaching posterior margin, median carina obscure apically (Fig. 3). Forewings long and narrow, longer than widest part about 3.35:1, widest in middle (Figs 1, 2, 16). Spination of apex of hind leg 5 (3+2) (tibia), 8 (6+2) (basitarsus) and 4 (2nd tarsomere) (Fig. 5). Metabasitarsus distinctly longer than tarsomere 2+3 combined (about 1.79:1), calcar shorter than metabasitarsus (about 0.77:1), thin, bearing 29 black-tipped teeth on lateral margin (Fig. 5). Male genitalia. Male pygofer slightly wider ventrally than dorsally, laterodorsal angles roundly produced caudad; in posterior view with opening longer than wide, ventral margin shallowly excavated, medioventral process absent (Figs 6–9). Suspensorium ventrally ring-like, dorsally with a process at each side leading to the anal segment ventrolaterally (Fig. 14). Diaphragm narrow, mediodorsal processes fairly developed, pillar-like, basally with a broad common stalk, thence contiguous apicad, apical part separated and curved laterad, tips truncated (Figs 6, 8). Parameres fairly long, reaching to the level of anal segment, in posterior view contiguous basally, apical 2/5 convergent mesad, apices rounded, inner margins expanded and ornamented with denticles medially (Figs 6, 11, 15). Aedeagus tubular, arch-shaped in profile, moderately dilated near the base, near apex on the dorsal side to the ventral apex provided with small teeth, gonopore apical on the slightly membranous dorsal side (Figs 12, 13). Male anal segment deeply sunk into dorsal emargination of pygofer, ring-like, caudoventral processes absent (Figs 6, 7, 10, 11).

Known currently from the type locality in northwest China (Shaanxi Province).