Vekunta pentaprocessusa, Sui, Yong-Jin & Chen, Xiang-Sheng, 2019

Sui, Yong-Jin & Chen, Xiang-Sheng, 2019, Review of the genus Vekunta Distant from China, with descriptions of two new species (Hemiptera, Fulgoromorpha, Derbidae), ZooKeys 825, pp. 55-69 : 55

Vekunta pentaprocessusa sp. n. Figs 3, 4, 20-29, 30-34

Type material.

Holotype: ♂, CHINA, Yunnan: Mt Gaoligong National Natural Reserve (25°17'N, 98°48'E), light trap, 15 August 2013, Y- J Wang. Paratypes, Yunnan: 5♂♂1♀, same date as holotype; 3♂♂, Mt Gaoligong National Natural Reserve, light trap, 13 June 2011, J-K Long; 6♂♂2♀♀, Mt Gaoligong National Natural Reserve, light trap, 13-16 August 2013, W-C Yang, H-Y Sun, Y-J Wang; 1♂, Mt Gaoligong National Natural Reserve, light trap, 12 August 2018, L-J Yang.

Measurements.

Body length (including forewing): male 6.17-6.48 mm (n = 16), female 6.96-6.99 mm (n = 3); forewing length: male 5.36-5.40 mm (n = 16), female 6.04-6.11 mm (n = 3).

Description.

Coloration. General color yellow. Head (Figs 3, 4, 20-22) yellow. Vertex (Figs 3, 20) with lateral and apical carinae yellow. Frons (Fig. 21) with lateral margins yellow. Clypeus (Fig. 21), gena (Fig. 22), and antennae (Figs 20-22) yellow. Rostrum yellow with apex fuscous. Eyes (Figs 3, 4, 20-22) black, ocelli yellow. Pronotum, mesonotum and tegula yellow (Figs 3, 20). Forewing (Figs 3, 4) white except with costal and clavus margins from base to near apex brown to dark brown, veins white. Hindwing subhyaline, white, veins white. Thorax with ventral areas yellow, mesopleura (Figs 4, 22) with an oval black spot. Legs pale yellow. Genital segment yellow.

Head and thorax. Head (Figs 3, 20) including eyes distinctly narrower than pronotum (1:1.63). Vertex (Figs 3, 20) at base wider than length in middle line (1:0.62), apex narrower than base (1:1.45), straightly projecting before eyes, median carina absent, lateral margin distinctly carinate, posterior margin slightly concave. Frons (Fig. 21) moderately narrow, near frontoclypeal suture widest, disc concave, lateral margins broadly concave inward, distinctly carinate, median carina absent. Postclypeus (Fig. 21) with median and lateral carinae, anteclypeus with weak median carina, lateral carinae absent. Apical segment of rostrum longer than wide. Antennae (Figs 20, 22) short, second antennomere oval, flagellum originated from apical point. Subantennal processes (Figs 21, 22) small. Eyes (Figs 21, 22) semicircular; ocelli present, adjacent to eyes. Median length of pronotum short, anterior margin between eyes convex, posterior margin deeply concave, median carina distinct. Mesonotum (Fig. 20) as long as broad, slightly convex, in lateral view raised above vertex, with median carina distinct and lateral carina weak, posterior end triangularly depressed. Forewing (Fig. 23) narrow, 3.3 times as long as the widest point, clavus closed, claval veins with a prominent ridge of tubercles, base of costal margin curved inward, costal margin also granulated. Hindwing (Fig. 24) shorter than forewing. Hind tibia without lateral spine.

Male genitalia. Anal tube (Fig. 25) in lateral view, obliquely, slender at basal half, apical margin rounded, anal styles sets at basal one-fifth; in dorsal view (Fig. 26), length in middle line approximately three times as long as wide at middle, asymmetrical, apex rounded. Pygofer (Fig. 25) in lateral view distinctly narrowed medially, processes (Fig. 27) of pygofer asymmetrical, left dorsocaudal process slightly longer than right one. Gonostyli (Fig. 25) bilaterally asymmetrical, right gonostylus larger than left one, large, elongate and slightly reaching less than apex of anal tube in lateral view, inner side with saccate process at basal two-thirds near ventral margin, left gonostylus with a small process rising from apical one-fifth of dorsal margin. Phallus asymmetrical, periandrium curved, with a hooked process near base ventrally directed caudally, in left lateral view (Fig. 28), with a slender process near middle, directed dorsocaudally, and two stout processes at apex, in right lateral view (Fig. 29), with a plate near apex, and a long process at apical two-thirds, slightly curved, directed dorsally, apical margin serrate. Aedeagus with five spinous processes at apex, the largest process produced reaching to base of periandrium, acute at apex.

Female genitalia. Anal tube (Figs 30, 31) symmetrical and ring-shaped in dorsal view; apex of anal tube slightly exceeding apex of anal style. Abdominal sternite VII (Fig. 32) in ventral view symmetrical, posterior margin protruded medially, with protrusion length shorter than width at base, apical margin rounded. Gonapophysis VIII (Figs 32, 33) with eight teeth at ventral margin. Gonapophysis IX (Fig. 34) with two lobes incompletely symmetrical, lateral margin with dense setae, each lobe with a membrane sheet dorsally, blunt apically. Gonoplac (Figs 30, 32) in lateral view nearly rectangular, with a small angulate process at apex dorsally, lateral margin with spiniform setae.

Remarks.

This species is similar to V. fuscolineata Rahman et al., 2012, but distinguished from the latter by the slightly dark yellow mesonotum (Fig. 20) (mesonotum distinctly dark brown on each side, golden yellow in middle in V. fuscolineata ); periandrium (Figs 28, 29) with a hooked process near base ventrally, directed caudally (periandrium without process ventrobasally in V. fuscolineata ); anal tube of male (Fig. 26) asymmetrical in dorsal view (symmetrical in dorsal view in V. fuscolineata ); gonostyli (Fig. 25) asymmetrical, with right gonostylus distinctly larger than left one in lateral view (symmetrical in lateral view in V. fuscolineata ).

Etymology.

The new species name is derived from the Latin words penta- (five) and processus (process), referring to the apex of aedeagus with five processes in male.

Host plant.

Unknown.

Distribution.

China (Yunnan).