Mileewa yangi Yang, Meng & He

Yang, Mao-Fa, Meng, Ze-Hong, He, Qing & Dietrich, C. H., 2014, Illustrated checklist of mileewine leafhoppers (Hemiptera: Cicadellidae: Mileewinae) of China, with descriptions of four new species, Zootaxa 3881 (2), pp. 175-189 : 185-187

Mileewa yangi Yang, Meng & He , sp. nov.

( Figs 46 , 92–104 )

Length of males 4.8–5.0 mm, female 5.1 mm.

Coloration. Body dorsum chocolate brown with yellow white markings. Crown with longitudinal median line and two lateral oblique lines, in front of and behind ocelli with small spot; ocelli red, eyes yellow brown. Pronotum with many spots, anterior half with indistinct posteriorly diverging oblique lines; mesonotum with pair of oval median small spots, scutellum apex white. Forewing with veins red, surface with many translucent spots; with three hyaline markings, one large marking near middle of posterior margin, one relative large marking at base of second apical cell and small one at base of third apical cell. Face and venter yellow white, legs yellow white except apex of tarsi, pygofer red brown.

External features. Crown anterior margin almost angulate, median length nearly equal to interocular width; coronal suture distinct, almost extending to vertex; ocelli located on line between anterior eye angles; frontal suture extending onto crown and attaining ocelli; crown between ocellus and adjacent eye with longitudinal concavity. Face with frontoclypeus moderately convex, muscle impressions indistinct, transclypeal suture complete. Pronotum broader than head, posterior margin concave; Scutellum flattened.

Male genitalia. Pygofer with apicoventral margin angularly produced, ventral margin with short setae; pygofer ventral process short and wide, with two angular and one round apical projections. Subgenital plate extending as long as pygofer apex, surface with uniseriate macrosetae medially, with many microsetae mostly on outer lateral portion. Connective Y-shaped. Style slender, apex footlike with preapical setae and toothed process. Aedeagus compressed in dorsal view, with single apical spine; with pairs of apical and preapical ventral process, where each pair with similar size.

Female genitalia. Sternite VII in ventral view, with posterior margin convex, forming median rounded projection. Valvulae I in lateral view moderately expanded, slightly broaden near apex then tapered to apex; with columns of dorsal sculpture oriented nearly vertical, with dorsal sculpturing imbricate, ventral area with imbricate sculpturing in apex and indistinct strigate sculpturing in distal two thirds. Valvulae II in lateral view, broadened near midlength and tapered distally; dorsal margin of blade with small, widely spaced teeth.

Etymology. This species is named after one of the collectors of type specimens of the species, Yang Zai-hua.

Material examined. Holotype, male, China, Guizhou Province, Libo, Maolan, 2–4 October 2008, coll. Yang Zai-hua & Li Yu-jian. Paratypes: 1 male, 1 female, same data as holotype; 1 male, China, Guizhou Province, Libo, Maolan, 21–24 August 2011, coll. Meng Ze-hong.

Remarks. This species is similar to M. huapingana Meng & Yang in appearance, but differs from the latter in the apex of the pygofer process with two angular and one rounded projections; the pygofer process short, not extending beyond the pygofer apex; and the aedeagus having pairs of apical ventral processes as large as preapical ones.

Figures

FIGURES 27 – 48. Dorsal habitus of mileewine leafhoppers of China. 27, Mileewa lamellata. 28, M. longiseta. 29, M. longistripa. 30, M. lynchi. 31, M. margheritae. 32, M. mira. 33, M. nantouensis. 34, M. nigroscens. 35, M. octospina. 36, M. papillata. 37, M. polymorpha. 38, M. ponta. 39, M. rufivena. 40, M. sharpa. 41, M. shirozui. 42, M. tetraspina. 43, M. trispina. 44, M. ussurica. 45, M. xiaofeiae sp. nov. 46, M. yangi sp. nov. 47, M. yigongana. 48, M. zhangi. 27 – 29, 32, 34 – 38, 42 – 43, 45 – 46, 48 based on holotypes; 33, 47 based on paratypes. Scale bars = 1.0 millimeters.

FIGURES 92 – 99. Mileewa yangi Yang, Meng & He, sp. nov. 92, Head and thorax, dorsal view. 93, body, lateral view. 94, face. 95 – 98, male genitalia. 95, pygofer, lateral view. 96, subgenital plate, ventral view. 97, aedeagus, lateral view. 98, connective and style, dorsal view. 99, female sternite VII.

FIGURES 100 – 104. Mileewa yangi Yang, Meng & He, sp. nov., female genitalia. 100 – 102, valvula I. 100, general lateral view. 101, dorsal sculptured area at basal portion. 102, apical portion. 103 – 104, valvulae II. 103, general lateral view. 104, posterior portion. Scale bars = 0.3 millimeters in 100 and 103, 0.1 millimeters in 101, 102 and 104.