Xizicus (Eoxizicus) wuliangshanensis, Su & Duan & Liu & Chang, 2023

Su, Jie, Duan, Yanhao, Liu, Qing & Chang, Yanlin, 2023, One new species of the genus Xizicus Gorochov, 1993 (Orthoptera: Tettigoniidae Meconematinae) from Yunnan, China, Zootaxa 5318 (2), pp. 286-290 : 287

Xizicus (Eoxizicus) wuliangshanensis sp. nov., Chinese name XḂƜẘfflờ

( Figs. 1 , 2 )

Description. Male. Body small. Fastigium vertex conical, with dorsal sulcus in the midline, apex rounded. Eyes hemispheric, slightly protruding forwards and outwards ( Fig. 1A, B ). Apical segment of maxillary palpus longer than subapical one, apical area lightly inflated ( Fig. 1B ).

Anterior margin of pronotum straight, posterior margin protruding triangularly ( Fig. 1A ); lateral lobe longer than high, humeral sinus distinct. Thoracic auditory spiracle exposed completely, peanut-shaped ( Fig. 1B ). Wings developed, surpassing apices of hind femora, anterior and posterior margins of tegmina nearly parallel, tegmina shorter than hind wings ( Fig. 2A, B ). All femora without spines on ventral surfaces. Fore coxa with 1 spine, fore tibial tympana open on both sides. Internal and external sides of ventral surface of fore tibiae with 5 spines and 6 spines respectively; middle tibiae with 6 external and 5 internal spines severally on ventral surface; internal and external margins of hind tibiae with 18–20 short spines on dorsal surface separately, as well as 1 pair of dorsal apical spurs and 2 pairs of ventral apical spurs respectively.

Tenth abdominal tergite with 1 pair of long and depressed posterior processes, curved downwards and apices rounded ( Fig. 1C, E, F ). Cercus stout in basal half, apical half slender, faintly curved inwards and apex rounded; middle area of inner margin of cercus with a long branch which thin and curved ventrad ( Fig. 1C, D, E, F ). Subgenital plate broad at base, basal margin acutely concave, with a longitudinal groove in the midline. Styli lightly elongate, apices rounded; inserted on apices of lateral margins of subgenital plate ( Fig. 1D ).

Coloration. Body yellowish green (probably green when alive). Eyes reddish brown. Lateral margins of pronotal disc with a pair of longitudinal and sinuate black stripes. Posterior margin of tegmina dark brown ( Fig. 2A, B ). All spines and spurs of hind tibiae brown.

Female. Appearance is similar to male ( Fig. 2A, B ). Subgenital plate nearly trapezoidal, posterior margin slightly concave ( Fig. 1G ). Ovipositor long and straight, apices of ventral valvulae weakly hook-shaped, ones of dorsal valvulae acute ( Fig.1H ).

Material examined. Holotype: ♁, Wuliangshan, Jingdong, Yunnan, China. 11 August, 2022, coll. Yanhao Duan and Jie Su. Paratypes: 1♁, the same data as the holotype ; 1♀, Wuliangshan , Jingdong, Yunnan, China.14 August, 2022, coll. Yanhao Duan and Jie Su ; 2♀, Wuliangshan , Jingdong, Yunnan, China. 14 August, 2022, coll. Yanhao Duan and Jie Su ; 1♀, Wuliangshan , Jingdong, Yunnan, China. 22 August, 2022, coll. Yanhao Duan and Jie Su.

Measurements (mm). Body length: ♁11.2–13.1, ♀ 10.9–12.8; pronotum length: ♁3.6–4.1, ♀ 3.6–4.6; hind femur length: ♁11.1–12.8, ♀ 10.1–12.5; tegmen length: ♁22.7–23.8, ♀ 22.3–26.1; ovipositor length: 10.1–12.1.

Distribution. China (Yunnan).

Remarks. This new species resembles Xizicus (Axizicus) furcus Cui, Liu & Shi, 2020 , the differences are: male tenth abdominal tergite with a pair of posterior processes; the inner branch of male cercus longer than the outer one.

This new species is also similar to Xizicus (Eoxizicus) uncicercus Mao & Shi, 2015 ; it differs from the latter in: male cercus observably elongate, inner branch longer than outer one; posterior margin of subgenital plate lightly protruding.

Etymology. The name of the new species is named for the type locality.

Figures

FIGURE 1. Xizicus (Eoxizicus) wuliangshanensis sp. nov. male: A–B. head and pronotum: A. dorsal view; B. lateral view; C– F. apex of abdomen: C. dorsal view; D. ventral view; E. apical view; F. lateral view; female: G. subgenital plate; H. ovipositor in lateral view.

FIGURE 2. Habitus lateral view of Xizicus (Eoxizicus) wuliangshanensis sp. nov.: A. male; B. female.