Kokeshia drepanoides sp. nov.

urn:lsid:zoobank.org:act: B310837E-53EA-4E34-B9E8-0E16DE44D4CA

Figs 9– 10, 26E, 29A, 32

Diagnosis

Kokeshia drepanoides sp. nov. can be recognized from all other species of Kokeshia by tergite VIII subdivided into two hemitergites, left hemitergite VIII with a flattened, curved, sickle-shaped process. (Figs 9D, E, G, 10 A−B).

Etymology

The species epithet is derived from the Greek adjective ʻ drepanoides ʼ, means ʻsickle-shapedʼ, and refers to the curved, sickle-shaped process of tergite VIII.

Material examined

Holotype CHINA • ♂; Yunnan Province, Honghe, Jinping County, Adebo Town; 22°54′21″ N, 103°13′49″ E; ca 1480 m a.s.l.; 30 Jul. 2016; Jiu-Yang Luo leg.; NKUM.

Paratypes CHINA • 7 ♂♂; same collection data as for holotype; SYSBM .

Description

Male

MEASUREMENTS (in mm) (male holotype / male paratypes, N = 5). Total body length 1.27 / 1.20–1.31; length of head 0.22/ 0.19–0.23, maximum width across eyes 0.36 / 0.36‒0.37, interocular distance 0.25 / 0.24‒0.25; length of antennal segment I 0.07 / 0.06–0.07, segment II 0.07 / 0.07, segment III 0.27 / 0.29‒0.30, segment IV 0.33 / 0.32‒0.33; length of labial segment I 0.07 / 0.07‒0.08, segment II 0.05 / 0.04‒0.05, segment III 0.03 / 0.04, segment IV 0.11 / 0.10‒0.12; middle length of pronotum 0.34 / 0.35‒0.37, length of collar 0.05 / 0.05‒0.06, humeral width 0.60 / 0.61‒0.63; length of forewing 1.16 / 1.07–1.15; length of fore femur 0.27 / 0.29–0.30, fore tibia 0.33 / 0.31‒0.33, fore tarsus 0.12 / 0.12‒0.13; length of middle femur 0.34 / 0.32‒0.34, middle tibia 0.34 / 0.30‒0.35, middle tarsus 0.11 / 0.11‒0.12; length of hind femur 0.33 / 0.36–0.38, hind tibia 0.56 / 0.54–0.56, hind tarsus 0.17 / 0.17–0.18; greatest width of abdomen 0.55 / 0.52‒0.55.

MACROPTEROUS. Small sized (about 1.2‒1.31 mm).

COLORATION. Body light brown to brown, appendages yellowish brown (Fig. 9A–C). Surface, vestiture and general structures as in generic description, except mentioned below.

HEAD. Interocular distance 0.67–0.69 × length of maximum width across eyes.

THORAX. Humeral width 1.69‒1.77 × as long as middle length of pronotum. Venation of forewing in accordance with general pattern of genus. C+Sc, R+M, R and basal portion of 1An darker than wing surface, other veins slightly darker than wing surface (Fig. 26E).

ABDOMEN. Tergite VII and sternite VII slightly asymmetrical. Tergite VIII subdivided into two hemitergites, left hemitergite VIII with a flattened, curved, sickle-shaped process, and horizontally directed mesad; prominent setae near its inner margin (Figs 9D–E, G, 10 A−B). Right hemitergite VIII simple, posterolateral portion elongated subtrapezoidal, projecting posteriad, prominent setae near posterior margin (Figs 9E‒F, 10C).

GENITALIA. Pygophore asymmetrical, dorsal surface with rows of microtrichia on transverse projections, posterior margin with curved setae. Parameres strongly asymmetrical, left paramere (Figs 9E, 10D‒E) with broadly rounded laminate extension directed dorsal near base, and with flattened and elongate distal projection, and curved inward from middle of it; right paramere (Figs 9E, 10F‒G) with flattened, blunt and relatively slender distal projection. Apical portion of phallus (Figs 9D‒E, 10E) tubular, short, forming half coil outside of pygophore, with triangular laminate at middle portion.

Female

Unknown.

Distribution

China: Yunnan (Fig. 32).