Neolygus fuscovultus n. sp.

Figs. 1I, 11J–L, 20A–F

Material examined. Holotype (♀). TAIWAN: Nantou Co., Huiseun Forest Area, forest trail no. 45 toward Guandao trail, 24.0828, 121.0319, 1000–1200 m alt., 14 Mar 2017, T. Yasunaga et al. (NMNS) (AMNH _ PBI 00378772).

Diagnosis. Currently known only by the holotype female. Recognized readily by its oval, stout body (Fig. 1I); shiny chocolate brown head; narrow vertex; short antennal segment II that is shorter than labium; and semi-circular spot at apex of corium. This new species can be distinguished from any other Asian congeners by a combination of these characters; however, its closest relative is yet to be determined.

Description. Holotype female: Body moderate in size, ovoid, stout; general coloration pale green (Fig. 1I), with densely distributed, pale, simple, reclining or semierect setae. Head wholly shiny chocolate brown, with sparsely distributed, short setae (Fig. 20A); vertex narrow; basal transverse carina of vertex slightly narrower than pronotal collar. Antenna pale brown; apical half of segment II, entire III and IV fuscous; segment II shorter than labium. Labium reddish brown, reaching apex of mesocoxa. Pronotum, scutellum and thoracic pleura pale green; scent efferent system pale brown, with narrow peritreme (Fig. 20C). Clavus tinged with brown; apex of corium with dark, semicircular spot; membrane pale smoky brown, with pale veins and two obscure spots at middle and near apex of cuneus. All coxae and legs pale green; metafemur with two apical brown rings. Ventral side of abdomen pale green.

Female genitalia (11J–L, 20D–F): Sclerotized rings small, elongate ovoid, mesially separated to each other (Fig. 11L); posterior wall as in Figs. 11K, 20D–F; interramal sclerite with sparsely distributed spinules between inner bases of interramal lobes (Fig. 20E–F); interramal lobe wide, with fields of micro-spines laterally and inner corner (Fig. 20D); lateral lobe narrow, fused mesially (Fig. 20F).

Measurements: See Table 1.

Etymology. From Latin, fuscus (= dark) combined with vultus (= countenance), referring to the uniquely fuscous head; an adjective.

Distribution. Taiwan (Nantou).

Biology. Unknown.