Capnogryllacris xichou Peng & Bian, 2021

Peng, Xiaoyu, Yang, Zizhong & Bian, Xun, 2021, New reports of Capnogryllacris (Orthoptera: Gryllacrididae) from Yunnan, China, Zootaxa 5047 (3), pp. 391-400 : 392

Capnogryllacris xichou Peng & Bian , sp. nov. (Chinese name: MṞ烟ḋ⁂)

Figures 1–2 , 7A–B

Male. Body medium. Fastigium verticis narrow, about 1.6 times as wide as scape, the lateral margins slightly raised. Face ovoid, frons with fine transverse riffles and scattered impressed dots. Ocelli distinct ( Fig. 1A ).

Anterior margin of pronotum straight, the middle slightly projected, posterior margin nearly straight; lateral lobes longer than high with V-shaped furrow, posterior angle arched, humeral sinus indistinct.

Wings surpassing hind knees ( Fig. 7A–B ). Tegmen ( Fig. 2 ): Radius with two branches, both forked near tip; media arises free from base, while media of left tegmen connected with R in basal area and shortly after divided again; cubitus anterior of left tegmen forks into two veins in short distance of middle area and then fused one vein, while media of the right tegmen undivided; cubitus posterior is single branched, free throughout; with 4 anal veins, the last one very narrow and short.

Fore coxae with a small spine; fore and middle femora unarmed; fore and middle tibiae with four pairs of ventral spines and one pair of smaller ventral spurs. Hind femora with 7–9 external and 9–11 internal spines on ventral margins; hind tibiae with 6–7 external and 5–6 internal spines on dorsal margins, ventral margins with one subapical spur each; with 3 apical spurs on both sides.

Abdominal tergites two and three without stridulatory pegs ( Fig. 1G ). Eighth abdominal tergite prolonged. Ninth abdominal tergite curved downwards, split in midline and provided at both sides with a short, acute spine pointing outwards and slightly forwards and crossing each other ( Fig. 1I–L ). Subgenital plate wider than long with basal area slightly straight, lateral margins convex, posterior margin faintly concave in middle ( Fig. 1F, L ). Styli stout, longer than subgenital plate, inserted at apico-lateral angles of subgenital plate ( Fig. 1F, L ).

Female. Unknown.

Coloration. General color yellowish brown. Genae, apical area of labrum and mandibles black ( Fig. 1A ). Dorsal area of head with 1 longitudinal black band in middle area ( Fig. 1B–C ). Internal margins of antennal scrobae, scape and pedicels black; flagellum yellowish. Eyes brown. Pronotum yellowish, margins light brown, disc with a broad, black band that reaching the anterior margin of lateral lobes ( Fig. 1B–C ). Apical area of hind femora, basal and apical area of hind tibiae, and dorsal spines of hind tibiae black. Tegmina semi-transparent, cross vein blackish.

Measurements (mm). body w/wings: 43.2; body w/o wings: 31.7; pronotum: 7.6; tegmen: 30.5; hind femur: 17.7.

Material examined. Holotype: male, Xiaoqiaogou, Fadou, Xichou , Yunnan, July 26, 2021, coll. by Xiaoyu Peng , Wei Bin and Xun Bian ; GXNU.

Distribution. Yunnan (Xichou).

Discussion. The new species differs from the Capnogryllacris melanocrania (Karny, 1929) by coloration of occiput and disc of pronotum ( Fig. 1B–E ), and the shape of spine in male abdominal tergite.

Etymology. The new species is named after the type locality; noun in apposition.

Figures

FIGURE 1. Capnogryllacris xichou Peng & Bian, sp. nov. Male: A. head in frontal view; B–E. head and pronotum: B–C. dorsal view, D–E. lateral view; G. second and third abdominal tergites in lateral view; F, H–L. apex of abdomen: H. lateral view, F, L. apical view, I–K. apical view.

FIGURE 2. Main veins of tegmina of Capnogryllacris xichou Peng & Bian, sp. nov. Male: A–C. left tegmen; D–F. right tegmen.

FIGURE 7. Habitus of Capnogryllacris spp. lateral view. A–B. Capnogryllacris xichou Peng & Bian, sp. nov.; C–D. Capnogryllacris humberti (Griffini, 1914); E–F. Capnogryllacris rufonotata (Li, Liu & Li, 2014).