Kokeshia caii sp. nov.

urn:lsid:zoobank.org:act: F68DE9D8-F3D7-4583-9224-2807B7234F5C

Figs 7–8, 26D, 28D, 32

Diagnosis

The male of K. caii sp. nov. is similar to K. weirauchae sp. nov., but can be recognized from the latter by the left lateral margin of the hemitergite VIII strongly concave from about ⅓ of its apex, and the apical portion of hemitergite VIII with a finger-shaped process, which without any thick spiniform microtrichia, and with numerous microtrichia which the apex split into 2 to 5 branches (Figs 7D‒G, 8A‒B).

Etymology

The species epithet is derived from and dedicated to Prof. Wanzhi Cai (College of Plant Protection, China Agricultural University, China), recognizing his contributions to the study of taxonomy, morphology and phylogeny of Heteroptera.

Material examined

Holotype CHINA • ♂; Yunnan Province, Xishuangbanna, Menghai County, Gelanghe Town, Pazhen village; 21°51′10.37″ N, 100°35′26.67″ E; ca 1610 m a.s.l.; 27 Jul. 2019; Jiu-Yang Luo leg.; light trap; SYSBM.

Paratypes CHINA • 5 ♂♂; same collection data as for holotype; SYSBM.

Description

Male

MEASUREMENTS (in mm) (male holotype / male paratypes, N = 5). Total body length 1.36 / 1.24–1.36; length of head 0.25 / 0.23–0.25, maximum width across eyes 0.39 / 0.37‒0.40, interocular distance 0.27 / 0.26‒0.28; length of antennal segment I 0.08 / 0.07–0.08, segment II 0.08 / 0.07‒0.08, segment III 0.30 / 0.28‒0.30, segment IV 0.34 / 0.31‒0.34; length of labial segment I 0.07 / 0.07‒0.08, segment II 0.06 / 0.05‒0.06, segment III 0.04 / 0.04‒0.05, segment IV 0.12 / 0.11‒0.12; middle length of pronotum 0.41 / 0.33‒0.40, length of collar 0.06 / 0.06, humeral width 0.70 / 0.60‒0.69; length of forewing 1.16 / 0.93–1.19; length of fore femur 0.30 / 0.31–0.33, fore tibia 0.35 / 0.33‒0.35, fore tarsus 0.13 / 0.13; length of middle femur 0.35 / 0.34‒0.38, middle tibia 0.36 / 0.33‒0.35, middle tarsus 0.12 / 0.12‒0.14; length of hind femur 0.37 / 0.38–0.41, hind tibia 0.58 / 0.55–0.58, hind tarsus 0.19 / 0.18–0.19; greatest width of abdomen 0.59 / 0.56‒0.58.

MACROPTEROUS. Small sized (about 1.24‒1.36 mm).

COLORATION. Body brown, appendages yellowish brown (Fig. 7A–C). Surface, vestiture and general structures as in generic description, except mentioned below.

HEAD. Interocular distance 0.68–0.71 × length of maximum width across eyes.

THORAX. Humeral width 1.69‒1.82 × 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 distinctly darker than wing surface, other veins darker than wing surface (Fig. 26D).

ABDOMEN. Tergite VII and sternite VII slightly asymmetrical. Tergite VIII subdivided into two hemitergites, left hemitergite VIII with finger-shaped process, and with numerous semi-erect, short to moderate long microtrichia on surface, and ends of these microtrichia split into 2 to 5 branches (similar to setae on process of hemitergite VIII of K. bui). Basal portion of process with scale-like projections, with 1 to 6 short microtrichia located on posterior margin of each one of them. Right hemitergite VIII simple, posterolateral portion round, projecting posteriad, outer margin with microtrichia (Figs 7E‒F, 8H).

GENITALIA. Pygophore slightly asymmetrical, dorsal surface with groups of microtrichia on small, tightly connected projections, posterior area with relatively long setae. Parameres strongly asymmetrical, left paramere (Figs 7E, 8C‒D) with broadly rounded laminate extension directed dorsal near base, and with flattened and elongate distal projection; right paramere (Figs 7E, 8F‒G) with flattened and blunt distal projection. Apical portion of phallus (Figs 7D‒E, 8E) tubular, forming nearly one complete coil outside of pygophore, apex thickened and forming a depression on one side.

Female

Unknown.

Distribution

China: Yunnan (Fig. 32).