Sangeeta sinuomacula Li, Dai & Li

Li, Hu, Dai, Ren-Huai & Li, Zi-Zhong, 2015, Description of Sangeeta sinuomacula sp. nov. (Hemiptera: Cicadellidae: Megophthalminae: Agalliini) from Yunnan Province of Southwest China, Zootaxa 3974 (1), pp. 129-134 : 130-133

Sangeeta sinuomacula Li, Dai & Li sp. nov.

( Figs 1 –15)

Body length (including tegmina). ♂, 5.9–6.0 mm; ♀, 6.1 mm.

Holotype description. Head and thorax (color). Ground color yellow brown ( Figs 1–3 ). Crown with black medial stripe and two pairs of black spots: one approximately equidistant between eye and median line, other near eyes. Face upper margin with two maculae contiguous with those on crown, midline with black stripe extending to base of postclypeus, and with dispersed black pattern near eyes; ocelli dark brown bordered with black; eyes reddish brown; frontoclypeal suture dark brown, bilaterally with pair of black spots, frontoclypeus with two rows of dark brown dots near lateral margins; anteclypeus dark brown, distal part black; gena white; lora yellowish; clypeal sutures black. Pronotum yellowish brown, anterior margin and posterior area with black peak shaped pattern bordering medial yellowish brown sinuate marking, posterior margin yellowish. Mesonotum dark brown, middle line and lateral angles black. Scutellum black, with pair of light yellow tadpole shaped stripes on lateral margins. Forewing black with yellow venation, claval suture pale yellowish. Legs dark brown. Female body color and pattern similar to male but lighter.

Morphology. Body ( Figs 1–2 ) slender, wedge shaped. Head shorter medially than laterally. Face ( Fig. 3 ) across eyes slightly longer than broad, frons with striate region distinct, area of frontoclypeal suture distinctly depressed; anteclypeus nearly oval, projected beyond lora and gena; transclypeal suture complete. Pronotum 2.3 × wider than broad, fore margin slightly depressed near eyes, hind margin slightly concave medially. Scutellum 1.2 × longer than pronotum. Forewings opaque, venation prominent, with three anteapical and four apical cells, inner anteapical cell closed basally with additional cross vein, cross vein between claval veins incomplete. Hind tibia with 11 macrosetae on PD row, 6 on AD row, 10 on AV row.

FIGURE. 15. Geographical distribution of Sangeeta sinuomacula Li, Dai & Li sp. nov.

Male genitalia. Pygofer ( Fig. 5 ), in lateral view, broad basally, lobe oval, with scattered setae on caudal part, dorsal margin approximately straight, caudal margin sloping, and ventral margin depressed at middle. Valve broader than long. Subgenital plates elongate, triangular, not fused to each other at basal part or to valve, ventral surface with few scattered setae and five stout macrosetae in one row. Segment X with lower portion strongly elongate then tapered to pointed tip. Style ( Fig. 6 ), robust, inner arm 1.8 × longer than outer arm, with inner margin triangularly inflated medially, distal half narrowed. Aedeagus ( Figs 7–8 ), rather complex, relatively robust, ventral part of apical half distinctly compressed; in lateral view, shaft with margin parallel sided, bent dorsally, apical ventral margin sinuate, dorsal apodeme elongate, slender; in ventral view, aedeagus broad basally, dorsal apodeme expanded in bilateral direction, shaft with pair of median slender processes on lateral margins, apex subacute; gonopore apical on ventral margin. Connective ( Fig. 9 ) simple, almost as wide as its long, caudal margin depressed medially, and anterior margin with fingerlike protuberance at middle.

Female genitalia. Seventh sternite ( Fig. 4 ) 3.0 × longer than sixth, and 1.5 × wider than long, with large triangular pigmented region with front angle and hind medial portion dark brown, hind margin approximately straight, ovipositor clearly exceeding pygofer. First valvulae ( Fig. 10 ), in lateral view, dorsally curved from base; ventral interlocking device clear; dorsolateral surface with sculptured area formed by orderly oblique rows of scalelike processes ( Fig. 11 ) on distal 1/3 of shaft; ventroapical region with scalelike processes; dorsoapical and ventroapical margins pseudodentate; apex acute. Second valvulae ( Fig. 12 ), in lateral view, also curved dorsally from base, with broadest region at apical sixth; dorsal hyaline area present, near apical 2/5; dorsal prominence heavily pronounced; teeth on apical half of dorsal margin, positioned behind dorsal prominence, not very uniform, mostly obtuse, of different sizes ( Fig. 13 ); apex blunt ( Fig. 13 ). Gonoplacs ( Fig. 14 ) in lateral view with basal half narrow and nearly parallel-sided between dorsal and ventral margins, dorsal margin suddenly broadened at apical 2/5 and then narrowing gradually toward rounded apex; surface with tiny spiniform processes and several setae along ventral margin.

Material examined. Holotype: ♂, CHINA: Yunnan Province, Gaoligongshan, Baihualing, 0 5. VIII. 2013, collected by Fan Zhi-Hua & Yang Wei-Cheng. Paratypes: 2 ♂♂, 1 ♀, same data as holotype.

Distribution. China (Yunnan Province) (Fig. 15).

Remarks. Based on the narrow face, vertex with distinct inverted V shaped striations and the shape of male genitalia the specimens clearly belong to the genus Sangeeta. However, this new species differs from most other Sangeeta in having the aedeagal shaft with a pair of slender processes rather than laminated expansions. Sangeeta fyanensis Viraktamath and S. linnavuorii Viraktamath also have paired, distally projecting processes on the aedeagus but they are short, stout, and close to the apex of the shaft.

Etymology. The new species name is derived from the Latin words “ sinuo- ” and “ macula ”, refers to the shape sinuate yellowish brown region on the pronotum.

According to original descriptions, illustrations and examinations of specimens the following key largely based on the male genitalia appears to distinguish Sangeeta species.

Figures

FIGURES 1 – 4. Sangeeta sinuomacula Li, Dai & Li sp. nov. 1. Male habitus, dorsal view; 2. Same, lateral view; 3. Male face; 4. Female seventh sternite and ovipositor.

FIGURES 5 – 14. Sangeeta sinuomacula Li, Dai & Li sp. nov. 5. Male genitalia and subgenital plate, lateral view; 6. Style, dorsal view; 7. Aedeagus, lateral view; 8. Same, caudal view; 9. Connective, dorsal view; 10 – 11. First valvulae; 12 – 13. Second valvulae; 11, 13. partial enlarged view.