Undulivena thaiensis, Song, Yuehua & Li, Can, 2019

Song, Yuehua & Li, Can, 2019, A new unique leafhopper genus of Erythroneurini from Thailand, with the description of one new species (Hemiptera, Cicadellidae, Typhlocybinae), ZooKeys 829, pp. 23-28 : 23

Undulivena thaiensis sp. n. Figs 1-22

Diagnosis.

The forewing has yellow-whitish stripes along veins. The style apex expanded, with inner margin tooth-like medially, and the aedeagal shaft spindle-shaped in ventral view, with single small subbasal process.

Description.

Crown yellow, with large irregular central blackish brown patch (Figs 3, 7). Eyes grey (Figs 2, 6). Face pale beige marked with brown on postclypeus laterally and on anteclypeus basally (Figs 4, 8). Pronotum whitish yellow with large patch medially and hind margin, blackish brown (Fig. 1). Scutellum blackish brown (Fig. 1). Fore wing dark brown with veins margined with yellow-white (Fig. 1).

Male abdominal apodemes short, not extending to hind margin of 3rd sternite (Fig. 12). Male genitalia as in generic description with male pygofer dorsal appendage tapered distally; extension of anal tube appendage hook-like apically (Figs 16, 23). Pygofer lobe with one dorsal macrosetae (Fig. 13). Subgenital plate with group of 4 macrosetae laterally in basal half (Figs 13, 14). Style with 2nd extension of apical process expanded at midlength thereafter tapered to acute apex (Fig. 17). Aedeagal shaft with single small subbasal tooth-like process on left side, shaft spindle-shaped in ventral view with sharp basal corners and pair of converging lateral flanges distally, dorsal surface distally keel-like (Fig. 19); dorsal apodeme small tapered to apex in lateral view and with two sharp distal corners connected with ligament to ventral pygofer process; preatrium moderately long (Figs 19, 20).

Hind margin of female 7th sternite convex medially (Fig. 9).

Measurements. Body length, males 3.2-3.3 mm, females 2.7-2.8 mm.

Specimens examined.

Holotype: ♂, THAILAND, Kanchanaburi, Khuean Srinagarindra NP, Chong Kraborg, 14°29.972'N, 98°53.035'E 210m, Malaise trap, 4-11.ix.2008, coll. Boonnam & Phumarin (QSBG). Paratypes: 3♂♂, 3♀♀, same data as holotype; 4♂♂, THAILAND, Kanchanaburi, Khuean Srinagarindra NP, Tha Thung-na/Chong Kraborg, 14°29.972'N, 98°53.035'E 210m, Malaise trap 6-13.xi.2008, coll. Boonnam & Phumarin (INHS, SKS).

Remarks.

This species can be distinguished by external and male genitalia characters (see generic Remarks).

Etymology.

The species is named for the type locality, Thailand. The name is adjectival.