Mileewa quinquemaculata He & Yang, 2021

He, Hong-Li, Yan, Bin, Yang, Mao-Fa & Webb, M. D., 2021, Four new species of Mileewini leafhoppers (Hemiptera: Cicadellidae: Mileewinae) from China, with a checklist to Chinese species, Zootaxa 4949 (3), pp. 521-540 : 526-531

Mileewa quinquemaculata He & Yang , sp. nov.

( Figs 4 , 5 )

Length: male, 4.1–4.2 mm; female, 4.1–4.2 mm.

Dorsum black ( Figs 4a, 4e ). Crown with four yellowish white patches medially. Pronotum with an indistinct longitudinal yellowish white stripe medially. Forewing with an elongate translucent yellowish white spot subapically ( Fig. 4g ). Venter yellowish white.

Head similar in width to pronotum; crown roundly produced in dorsal view with median length equal to interocular width; coronal suture present basally. Forewing ( Fig. 4g ) similar in width throughout length with apical margin truncate.

Male pygofer without processes ( Fig. 5a ). Subgenital plates in ventral view expanded to midlength then tapered to narrowly rounded apex, with uniseriate row of macrosetae laterally and several fine microsetae on ventral surface ( Fig. 5b ). Aedeagus laterally compressed basally, shaft short and robust, cylindrical, with a bifurcate basal lamellate process ventrally, gonopore apical on ventral surface ( Figs 5d, 5e, 5f ). Connective Y-shaped with stem short and arms widely separated. Style slender, S-shaped with apex acute, several microsetae at midlength and a short lamellate process subdistally on inner surface; apices becoming pointed ( Fig. 5c ).

Female sternite VII, in ventral view, slightly longer than broad; posterior margin convex medially with acute apex. Valvulae elongate evenly tapered to apex distally; valvulae II with subtriangular widely spaced teeth on expanded subapical part and small closely spaced teeth apically ( Figs. 4j–m ).

Etymology. The specific name refers to the four yellowish white patches on the crown medially.

Material examined. Holotype: ♂, China, Hainan Province, Wuzhi Mountain , 17 April 2017, coll. Yao-wen Zhang. Paratypes: 1♂, 1♀, China, Hainan Province, Yinggeling Mountain , 28 April 2017, coll. Yao-wen Zhang ; 1♀, same data as holotype .

Remarks. This species is tentatively included in Mileewa as it lacks the pygofer processes present in other species. In addition, its head marking is more like Ujna but its forewing apex is truncate as in many Mileewa species rather than rounded in Ujna . Its S-shaped style and shape of the aedeagus are also distinctive.

Figures

FIGURE 4. Mileewa quinquemaculata sp. nov. a–c (male), a, habitus, dorsal view; b, habitus, lateral view; c, face. d–f (female), d, face; e, habitus, dorsal view; f, habitus, lateral view. g–h, wings, g, forewing; h, hind wing. i, fore femur, anterior surface. j–k, first valvulae, lateral view. l–m, second valvulae, lateral view. Scale lines for a–f = 500μm; for i–m = 0.1 mm.

FIGURE 5. Male genitalia of Mileewa quinquemaculata sp. nov. a, male pygofer, lateral view; b, subgenital plate, lateroventral view; c, style and connective, ventral view; d–f, aedeagus, d, dorsal view; e, lateral view; f, ventral view. Scale lines = 0.1 mm.