Ocellarnaca emeiensis brachyptera Shi & Zhu, 2021

ZHANG, QIANWEN, PANG, SIYU, RONG, PINYING & BIAN, XUN, 2023, Contribution to the knowledge of Chinese Gryllacrididae (Orthoptera) XIII Review the genus Ocellarnaca Gorochov, 2004, Zootaxa 5230 (3), pp. 305-332 : 318-320

Ocellarnaca emeiensis brachyptera Shi & Zhu, 2021 stat. nov. DMNJDZẠṀDzdz

Figures 18–21

Description. Female (first description). Face ovoid; forehead nearly smooth with some scattered impressed; fastigium verticis about 2 times as wide as scape ( Fig. 20A ). Ocelli very distinct, light yellow; median ocellus obviously larger than lateral ocelli ( Fig. 20A ).Anterior margin of pronotum slightly projected in the middle, posterior margin almost truncate with median concavity; lateral lobes longer than high ( Fig. 20B ). Wings shortened; tegmina oval, reaching the middle area of first abdominal tergite, veins simple and subparallel; hind wings shorter than tegmina ( Fig. 20B, E ). Fore coxae with 1 small spine; fore and middle femora unarmed, hind femora with 12–15 internal and 6–7 external spines on ventral surfaces. Fore and middle tibiae with 5 pairs of spines, middle tibiae with 1 internal spine on dorsal surface; tibiae with 6 internal and 7 external spines on dorsal surface, subapical areas of 1 ventral spine, apices with 1 pair of dorsal spines and 2 pairs of ventral spines. Second and third abdominal tergites with few largely reduced, indistinct stridulatory pegs ( Fig. 20D ). Seventh abdominal sternite prolonged at posterior margin with 1 pair of small lobes, which directing aside; following a membranous zone with some transverse folds ( Fig. 20H ). Subgenital plate with wide base, the lateral margins converging to apex, posterior margin with 1 obtusely triangular concavity and the lateral lobes triangular ( Fig. 20H ). Ovipositor elongate, strongly upcurved at basal area, margins gradually approaching towards apex, the subapical area faintly widened, apices narrowly rounded ( Fig. 20F ).

Coloration. Body light brown. Frons, genae, mandibles and anterior area of fastigium verticis black. Eyes black; ocelli yellow. Base of scape black. Pronotum with a broad longitudinal pink stripe along the midline; posterior margin black, which extending to the middle area of lateral lobes. Tegmina light brown, cells black. Basal and apical areas of all femora and tibiae black.

Measurements (mm). Female: BL 21.0, PL 4.5, TL 3.7, HFL 11.7, OvL 12.2.

Material examined. 1 female, Mangshan, Chenzhou , Hunan, August 23, 2019, coll. by Zongjun Lu ; 1 male, Jilongding, Yangchun , Guangdong, May 23, 2021, coll. by Xingmian Zhou .

Distribution. Guangdong (Yangchun); Hong Kong (Ma’anshan); Hunan (Chenzhou, Yizhang).

Figures

FIGURE 18. Ocellarnaca emeiensis brachyptera Shi & Zhu, 2021 stat. nov. Male from Jilongding, Yangchun, Guangdong: A. head in frontal view; B–C. head and pronotum: B. dorsal view, C. lateral view; D. right hind wing in lateral view; E. second and third abdominal tergites in lateral view; F–J. apex of abdomen: F. lateral view, G. ventral and apical view, H. apical view, I–J. ventral view.

FIGURE 19. Ocellarnaca emeiensis brachyptera Shi & Zhu, 2021 stat. nov. Male: A–B. habitus in lateral view; C–F. tegmina in dorsal view: C, E. left tegmen, D, F. right tegmen; E–F. tegmina of holotype (from Shi & Zhu, 2021: Fig. 1I–J); A–D. from Jilongding, Yangchun, Guangdong.

FIGURE 20. Ocellarnaca emeiensis brachyptera Shi & Zhu, 2021. Female from Mangshan, Chenzhou, Hunan: A. head in frontal view; B–C. head and pronotum: B. lateral view, C. dorsal view; D. second and third abdominal tergites in lateral view; E. right tegmen in lateral view; F. apex of abdomen in lateral view; G–H. seventh abdominal sternite and subgenital plate in ventral view.

FIGURE 21. Ocellarnaca emeiensis brachyptera Shi & Zhu, 2021 stat. nov. Female from Mangshan, Chenzhou, Hunan: A–B. head and pronotum:A. dorsal view, B. lateral view; C–E. apex of abdomen: C. dorsal view, D. ventral view, E. lateral view.