Anagonalia lapnanensis, Rai & Meshram, 2020

Rai, Stuti & Meshram, Naresh M., 2020, A new leafhopper species of the genus Anagonalia from India (Hemiptera, Cicadellidae, Cicadellinae), ZooKeys 1004, pp. 141-148 : 141

Anagonalia lapnanensis sp. nov. Figs 1-11 , 12-18

Material examined.

Holotype ♂, India: Arunachal Pradesh: Lapnan, (26°59'27.03"N, 95°28'58.29"E, 448m), 27.xi.2017, sweep net coll. Stuti (National Pusa Collection). Paratypes 5♀, same data as holotype.

Diagnosis.

The new species can be distinguished from other species of the genus in having pygofer process apically sinuate, short styles with indistinct lateral lobe, connective with short stem and strongly divergent arms, strongly bent aedeagal shaft with rectilinear apical part, and dorsal connective elongate and tapered distally.

Description.

Colour (Figs 1-4 ) generally pale green with yellow tinge. Head with three orange spots on crown, anterior spot saddle shaped, lateral pair elliptical, and one median translucent black spot on anterior margin in ventral view. Pronotum with four orange spots approximately equidistant from anterior and posterior margin and to each other. Scutellum medially with an orange spot and yellow mottling at anterior margin. Forewing with prominent orange markings on veins.

Head with anterior margin of crown rounded, anterolateral margin of crown angulate before eyes; crown longer medially than next to eyes, length medially approximately half width across eyes; ocelli on crown, almost equidistant from anterior and posterior margin, nearer to the lateral orange spots than to each other; ridge arising from eye up to ocelli, crown convex between ocelli. Face with frontoclypeus broad and relatively flat, laterofrontal suture extending onto crown; clypellus depressed distally (Fig. 3 ). Pronotum (Fig. 4 ) convex, posterior margin highly concave in middle, 1.3 × wider than long and 1.22 × longer than vertex.

Male second sternal abdominal apodemes (Fig. 9 ) short, not extending to next sternite.

Male genitalia. Pygofer (Fig. 11 ) in lateral view, 1.6 × longer than wide, with dispersed macrosetae on apical half; caudoventral margin with row of stout macrosetae; in ventral view, a long apically sinuate hook like process arising on posteroventral margin. Valve short, fused to pygofer. Subgenital plates (Fig. 5 ) 1.4 × as long as style, elongate, triangular, narrowed gradually towards apex, apex rounded, with a row of macrosetae along sub-lateral margin. Styles (Fig. 7 ) longer than wide, exceeding apex of connective, preapical lobe poorly developed.Connective (Fig. 7 ) Y-shaped with stem 1.5 × longer than arms. Dorsal connective with arms tapered to apex. Aedeagus in dorsal view (Fig. 8 ), wider in the middle and slightly narrow at base and apex, in lateral view (Fig. 10 ) shaft strongly dorsally curved at midlength, of similar width throughout length, gonopore apical.

Female genitalia. Seventh sternite (Fig. 14 ) with posterior margin slightly convex; first valvulae (Figs 15 , 16 ) slightly bent dorsally and tapered distally to acute apex; in lateral view dorsal irregular sculpturing extending from midlength to apex, subapically with ventral hyaline area extending to midlength. Second valvulae (Fig. 17 ) with dorsal sclerotised and hyaline area at ¼ th distance from base to apex, thereafter dorsal margin sharply expanded and slightly tapered to near apex with approximately 26 teeth, thereafter apex triangular with fine teeth on dorsal and ventral margins (Fig. 18 ).

Measurements (mm). Male 6.8 long, 1.5 wide across eyes, 1.4 wide across hind margin of pronotum. Female 6.3 long, 1.3 wide across eyes, 1.2 wide across hind margin of pronotum.

Etymology.

This species is named after the place of collection, Lapnan, in Arunachal Pradesh.

Remarks.

The new species is similar externally to the types of Tettigoniella affinis Distant from India, a species synonymised with A. melichari Distant from Sri Lanka by Young (1986) but, as the types of T. affinis are female, their identity is uncertain (MD Webb, pers. comm.). Based on figures seen of the types of A. melichari (Melanovsky & Webb, in prep.), the specimens described here differ in shape of the male genitalia by the pygofer process being strongly sinuate distally in lateral view, the aedeagal shaft apex being rectilinear in lateral view and the style lacking a preapical lobe. The specimen recorded by Young (1986) of A. melichari is figured in insufficient detail to be certain of its identity.

Figures

Figures 1 - 11. Anagonalia lapnanensis sp. nov. (male): 1 dorsal habitus 2 lateral habitus 3 face 4 head and thorax, dorsal view 5 subgenital plates and valve 6 sternal abdominal apodemes 7 styles and connective 8 - 10 aedeagus and dorsal connective, dorsal, ventral and lateral views 11 pygofer lateral view.

Figures 12 - 18. Anagonalia lapnanensis (female): 12 dorsal habitus 13 lateral habitus 14 sternite VII 15, 16 first valvula 17, 18 second valvula.