Mileewa triloba He & Yan & Yang 2021, sp. nov.

Mileewa triloba sp. nov.

(Fig. 1)

Length. Body length of male: 3.1 mm; length of crown: 0.33 mm; length of pronotum: 0.43 mm; interocular width: 0.34 mm; crown width: 0.63 mm; pronotum width: 0.72 mm.

Coloration. Dorsum dark brown (Fig. 1a). Crown blackish, with a median longitudinal yellow-brown stripe; ocelli ruby; eyes brown, with reddish brown on anterior angle and yellowish brown ventrally (Figs 1a, 1b). Face offwhite (Fig. 1c). Pronotum brown, with reddish patch on each side; mesonotum and scutellum brownish. Forewing brownish, with three hyaline pale patches distally (Fig. 1d).

External features. Head narrower than pronotum; crown with anterior margin broadly rounded in dorsal view, median length almost equal to interocular width and shorter than length of pronotum; lateral frontal sutures extending onto crown and attaining ocelli; coronal suture one-third median length (Figs 1a, 1b). Face with frontoclypeus slightly convex, anteclypeus distinctly elevated and truncate apically (Fig. 1c). Forewing rounded distally, parallel sided (Fig. 1d).

Male genitalia. Pygofer lobe in lateral view triangular with process arising at midlength of ventral margin tapered and evenly curved dorsad, almost attaining end of pygofer, apex pointed; dorsoposterior area and ventral angle with long or short fine setae. Anal tube extended to apex of pygofer (Fig. 1f). Subgenital plates robust, curved dorsally; apices attaining posterior margin of pygofer; with irregular macrosetae at midlength and few shorter spinelike setae on inner margin; some short and long microsetae on outer margin (Fig. 1g). Connective shield shaped, longer than wide with median anterior lobe short and broad. Style elongate, S-shaped, apex tapered, tip slightly emarginate; with several small setae on inner margin and two or three long microsetae on outer margin slightly distad of apex (Fig. 1h). Aedeagus preatrium longer than dorsal apodeme, the latter broadened laterally; shaft laterally compressed, robust, arcuate, with a pair of ventral lamellate processes at base and a single ventromedial lamella at apex; gonopore apical (Figs 1 j–1l).

Etymology. The specific name refers to the three membranous lobes on the aedeagus ventrally.

Material examined. Holotype: ♂, China, Hainan Province, Diaoluo Mountain (784 m), 18 June 2019, coll. Yan Jiang (GUGC).

Remarks. The new species is similar to Mileewa longistripa Yang & Li in having an S-shaped style but the latter species lacks color patterns on the crown; its pygofer process arises at the ventral angle and the basal processes of the aedeagus are tapered to a pointed apex.