Mileewa nigricincta, Yu & He & Yang, 2021

Yu, Xiao-Fei, He, Hong-Li & Yang, Mao-Fa, 2021, Three new species of Mileewa (Hemiptera: Cicadellidae: Mileewinae) from Tibet China, Zootaxa 4933 (3), pp. 435-443 : 442-443

Mileewa nigricincta sp. nov.

( Figs 5–6 )

Length: ³ 4.8 mm, ♀ 4.4–4.8 mm.

Coloration. Head and thorax bright yellowish dorsally, eyes black. Face, thorax ventrally, legs and abdomen ventrally off-white, face apically, tibia and pygofer yellow. Forewing yellow-white basally, anterior and apical margins black; apically with two oval yellow-pale transparent large spots.

External features. Crown distinctly produced, median length slightly greater than interocular width; crown slightly swollen, shallowly concave at ocelli; ocelli located on line between anterior eye angles and end of lateral frontal sutures; coronal suture reaching half median length of crown. Face with frontoclypeus slightly convex, muscle impressions obscure; anteclypeus longitudinally convex, apical margin slightly reflexed, clypeal suture distinct.

Male genitalia. Male pygofer in lateral view with dorsal and ventral margins nearly straight, ventral margin with small setae, ventral process long not beyond posterior margin, curved dorsad, apex branched with longer branch darkly pigmented. Anal tube appendage absent. Subgenital plates extending posteriorly beyond pygofer apex, surface with macrosetae on inner margin from basal 1/3 to apex, with long or short microsetae. Connective Y-shaped, longer than wide, stem slender, lateral arms short and broad. Style slender, with small setae near apical one-third, without teeth, apex abruptly twisted laterally. Aedeagus with preatrium nearly quarter length of shaft; dorsal apodeme weakly developed, shaft in lateral view moderately broad, sinuate, apex with pair of robust tapered processes extended ventrad and basad but not divergent from each other in ventral view; gonopore preapical on posterior surface at base of processes.

Etymology. The specific name refers to the brown margin of the forewing.

Material examined. Holotype ³, China: Tibet, Motuo, Dexing (1068 m), 15 August 2020, coll. Xianyi Wang. Paratypes: 1♀, Tibet, Motuo , 29 July 2020, coll. Xiaofei Yu ; 2♀♀, China: Yunnan, Tengchong, Shangyun (1700– 1900 m), 15 July 2002, coll. Maofa Yang ( GUGC) .

Remarks. This new species can be easily distinguished from the other species of the genus by its unusual coloration and shape of the male genitalia.

Figures

FIGURE 5. Mileewa nigricincta sp. nov. A. Male adult, lateral view; B. Male adult, dorsal view; C. Face; D. Male genitalia, lateral view; E. Pygofer, internal lateral view; F. Anal tube, ventral view; G. Subgenital plate, ventral view; H. Ventral pygofer process; I. Aedeagus, style and connective, ventral view; J. Aedeagus, lateral view; K. Style and connective, ventral view.

FIGURE 6. Mileewa nigricincta sp. nov. A. Male genitalia, lateral view; B. Pygofer, internal lateral view; C. Ventral pygofer process; D. Subgenital plate, ventral view; E.Aedeagus, style and connective, ventral view; F.Apical half of style, ventral view; G. Aedeagus, lateral view; H. Anal tube, ventral view.