Oncopsis konkaensis Li, Li & Dai

Li, Hu, Li, Juan & Dai, Ren-Huai, 2019, Taxonomic study of the leafhopper genus Oncopsis (Hemiptera, Cicadellidae, Macropsinae) from Sichuan Province, China with description of two new species and a key to males, ZooKeys 854, pp. 25-39 : 29

Oncopsis konkaensis Li, Li & Dai sp. nov. Figs 1-3, 7-16, 65

Type material.

Holotype male: CHINA: Sichuan Province, Tibetan Autonomous Prefecture of Garzê, Luding County, Minya Konka, Yajiageng, 3800 m above sea level, 13-viii-2015, collected by Hong-Ping Zhan (GUGC).

Etymology.

The specific epithet was derived from the type locality, Minya Konka (Sichuan Province), where the species was collected, combined with the Latin suffix -ensis, meaning from a locality.

Description.

[Holotype] Body color. Body background color (Figs 1, 2) yellowish. Crown (Fig. 1) with black transverse stripe. Face (Fig. 3) yellow, eyes reddish brown; antenna with pedicel and scape yellowish brown and flagellum dark brown; frons with approximately m-shaped black macula between eyes; frontoclypeus with n-shaped black macula at middle with two ends close to each other, and dark oblique striation near lateral margin; clypeus with brown markings. Pronotum (Fig. 1) dark brown medially, lighter anterolaterally. Scutellum (Fig. 1) black with pair of posteriorly diverging yellow submedial stripes. Forewing (Figs 2, 3) pale hyaline infused with brown, venation dark brown. Legs yellowish, marked with brown maculae.

Body appearance. Typically wedge-shaped. Head (Fig. 1) short, with parallel margins, broadly convex in dorsal view; width across eyes as wide as pronotum. Face including eyes (Fig. 3) slightly wider than long, distance between ocelli nearly 4 × that from ocellus to adjacent eye, frons with distinct rugae and longitudinal carina, clypeus with few scattered punctures. Pronotum (Fig. 1) with obvious closely-spaced transverse striations, anterior margin prominent frontally, and posterior margin concave medially, broader by 2.6 × length. Scutellum (Fig. 1) triangular, with coarse surface, middle length 1.5 × that of pronotum. Forewing (Figs 2, 3) hyaline, with three anteapical and four apical cells, veins well defined.

Male abdominal apodemes of second tergite (Fig. 9) weakly sclerotized, with rounded apex. Apodemes of second sternite (Fig. 10) basally broad, tapered to subacute apex, and pointed towards each other, distance between apodemes nearly 2 × their middle length.

Male genitalia. Pygofer side broad basally (Fig. 7), dorsal and caudal margin truncated, ventral margin with distal half expanded inwards, with scattered setae. Subgenital plate (Fig. 8) slender, 0.6 × length of ventral margin of pygofer. Aedeagus (Figs 11, 12) with broad basis, slender shaft, tapered to subacute end in lateral aspect, margins somewhat parallel, with round apex in ventral view, gonopore subapical. Dorsal connective (Fig. 13) s-shaped in lateral view, produced to large and long process from inner ventral margin bent ventrad beyond mid-length, apex bifurcate. Style (Fig. 14) with stout stem, dorsally bent, gradually widening to apex, with marginal setae, apical margin truncated. Connective (Figs 15, 16) typical of the genus.

Measurement.

Body length (including tegmen): 5.0 mm.

Distribution.

Sichuan (Fig. 65).

Host.

Betula spp. ( Betulaceae ).

Remark.

The new species differs from all other known members of Oncopsis by the unique shape of the dorsal connective, which has the medial process large and long, bent ventrad and bifurcated at the apex; also by the combined features of the aedeagus and pygofer.