Arcofacies varius Li & Yang & Chen 2019, sp. nov.
Creators: name: Li, Hongxing
name: Yang, Lin
name: Chen, Xiangsheng
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Delphacidae
Arcofacies
Arcofacies varius

description: Arcofacies varius sp. nov.
(Figs 13–24)
Measurements. Body length including forewing: male 2.9–3.0 mm (N = 2), forewing length: male 2.3–2.4 mm (N = 2).
Diagnosis. The salient features of the new species include the following: anal segment of male with lateroapical processes asymmetrical, left one distinctly longer than right one (Fig. 21); pygofer in posterior view with 4 spinous medioventral processes (Fig. 19); aedeagus with long spinous process at base, apex acute, directed ventrad, middle ventral margin of aedeagus without process (Fig. 22); apex of genital style not forked (Figs 23, 24).
Coloration. General color yellowish brown with green. Frons, vertex, pronotum and mesonotum with median carina white bordered with blackish brown (Figs 15–17). Eyes dark brown to blackish brown; ocelli reddish brown. Antennae with dorsal and ventral margins and apex of scape, base and near apex of pedicel dark brown to blackish brown (Fig. 16). Lateral margins of frons, gena, vertex and pronotum each with oblique white band bordered with brown or dark brown (Figs 15, 16). Cypeus yellowish white (Fig. 16). Forewings with yellowish brown over basal third, rest area hyaline, along transverse vein and apical veins with brown stripes as figured (Fig. 18), in dark portion veins with white spots. Wings hyaline with brown veins. Legs yellowish brown. Abdomen with dorsum dark brown.
Head and thorax. Vertex (Fig. 15) wider at base than long submedially about 1.55: 1. Frons longer in middle line than wide at widest part about 1.26: 1, widest just above ocelli.Antennae surpassing frontoclypeal suture, scape long equal to wide, shorter than pedicel about 0.38: 1 (Fig. 16). Pronotum shorter than vertex about 0.70: 1. Mesonotum longer in middle line than vertex and pronotum combined about 1.84: 1 (Fig. 15). Forewing in middle line longer than wide at widest part about 2.34: 1 (Fig. 18).
Male genitalia. Anal segment of male short, lateroapical angles produced into stout spinous process respectively, asymmetric, left one distinctly longer than right one (Fig. 21). Pygofer in posterior view ventral margin with four medioventral processes, finger-like (Fig. 19), in lateral view ventral angles distinctly produced (Fig. 20). Aedeagus (Fig. 22) with long spinous process at base, S-shaped curved, apex acute, directed ventrad. Genital styles divergent, long, reaching ventral margin of anal segment, broad at base, narrowing to apex (Figs 23, 24).
Type materials. Holotype ♂, China: Yunnan, Mengla County (21°55´N, 101°15´E), on bamboo, 26 Apr. 2015, Zheng-Xiang Zhou; paratype, 1♂, same data as holotype, Qiang Luo.
Remarks. This species is similar to A. strigatipennis Ding, 1990 but differs by: (1) anal segment of male with lateroapical processes asymmetrical, left one distinctly longer than right one (Fig. 21) (anal segment with lateroapical processes symmetrical in A. strigatipennis); (2) pygofer in posterior view with 4 spinous medioventral processes (Fig. 19) (pygofer in posterior view without medioventral process in A. strigatipennis); (3) aedeagus with long spinous process at base, middle ventral margin without process (Fig. 22) (aedeagus broad at base, nearly quadrate, middle of dorsal margin and ventral margin each with process in A. strigatipennis).
Etymology. The specific name is derived from the Latin word “ varius ” (meaning different, changeable), referring to the anal segment with two asymmetrical processes.
Host plant. Bamboo.
Distribution. China (Yunnan).
description: Published as part of Li, Hongxing, Yang, Lin & Chen, Xiangsheng, 2019, Two new species of the bamboo-feeding planthopper genus Arcofacies Muir (Hemiptera: Fulgoroidea: Delphacidae) from China, pp. 384-390 in Zootaxa 4706 (2) on page 389, DOI: 10.11646/zootaxa.4706.2.11, http://zenodo.org/record/3567318