Arcofacies longispinus 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 longispinus

description: Arcofacies longispinus sp. nov.
(Figs 1–12)
Measurements. Body length including forewing: male 3.0– 3.1 mm (N = 2), forewing length: male 2.4–2.5 mm (N = 2).
Diagnosis. The salient features of the new species include the following: anal segment of male with lateroapical processes symmetrical (Fig. 7); pygofer in posterior view with 4 spinous medioventral processes (Fig. 7); aedeagus with long spinous process at base, apex acute, directed ventrad, middle ventral margin of aedeagus with small process (Figs 9, 10); apex of genital style not forked (Figs 11, 12).
Coloration. General color yellowish brown with green. Frons, vertex, pronotum and mesonotum with median carina white bordered with blackish brown (Figs 3–5). Eyes yellowish to blackish brown; ocelli reddish brown. Antennae with apex of scape blackish brown, pedicel yellowish white (Fig. 4). Lateral margins of gena, vertex and pronotum each with oblique white band bordered with brown or dark brown (Figs 3, 4). Clypeus yellowish white (Fig. 4). Forewings with pale brown over basal third, rest area hyaline, along transverse vein and apical veins with brown stripes as figured (Fig. 6), in dark portion veins with white spots. Wings hyaline with brown veins. Legs yellowish brown.
Head and thorax. Vertex (Fig. 3) wider at base than long submedially about 0.97: 1. Frons longer in middle line than wide at widest part about 1.25: 1, widest above ocelli. Antennae surpassing frontoclypeal suture, scape long equal to wide, shorter than pedicel about 0.38: 1 (Fig. 4). Pronotum shorter than vertex about 0.50: 1. Mesonotum longer in middle line than vertex and pronotum combined about 1.55: 1 (Fig. 3). Forewing longer in middle line than wide at widest part about 2.37: 1 (Fig. 6).
Male genitalia. Anal segment of male short, lateroapical angles produced into stout spinous process respectively (Fig. 7). Pygofer in posterior view ventral margin with four medioventral processes, finger-like (Fig. 7), in lateral view ventral angles distinctly produced (Fig. 8). Aedeagus with long spinous process at base, apex acute, directed ventrad, middle ventral margin of aedeagus with small process (Figs 9, 10). Genital styles long, reaching ventral margin of anal segment, broad at base, narrowing to apex (Figs 11, 12).
Type materials. Holotype ♂, China: Yunnan, Yingjiang County (24°´44N, 97°33´E), on bamboo, 18 Aug. 2015, Xiang-Sheng Chen; paratype, 1♂, same data as holotype, Lin Yang.
Remarks. This species is similar to A. varius sp. nov. but differs by: (1) anal segment of male with lateroapical processes symmetrical (Fig. 7) (anal segment with lateroapical processes asymmetrical, left one distinctly longer than right one in A. varius sp. nov.); (2) middle ventral margin of aedeagus with small process (Figs 9, 10) (middle ventral margin of aedeagus without process in A. varius sp. nov.); (3) genital styles in posterior view not distinct divergent (Fig. 7) (genital styles in posterior view distinct divergent in A. varius sp. nov.).
Etymology. The specific name is a combination of the Latin words “ longus ” and “ spinus ”, referring to the aedeagus basally with a long spinous process.
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 pages 387-388, DOI: 10.11646/zootaxa.4706.2.11, http://zenodo.org/record/3567318