Sinagryllacris biprocera, Pang & Luo & Bian, 2024

Pang, Siyu, Luo, Haiyu & Bian, Xun, 2024, Contribution to the knowledge of Chinese Gryllacrididae (Orthoptera: Ensifera: Stenopelmatoidea) XXV: Six new species from Hainan Province and one new synonym, Zootaxa 5507 (1), pp. 140-152 : 150-151

Sinagryllacris biprocera sp. nov.

双ẋ华šẽ

Figures 9 , 10A

Description. Female. Body large and slender.

Head. Face smooth ( Fig. 9A ), dorsal surface convex. Fastigium verticis narrow, approximately 0.8 times the width of scape, apex obtusely rounded, lateral margins raised. Eye ovoid, ocellus distinct, median ocellus nearly oval, lateral ocelli nearly oval. Scapes and eyes nearly equal in length, pedicel about half the length of scape.

Thorax. Anterior margin of pronotum slightly projecting in the middle, posterior margin widely arched ( Fig. 9C ); lateral lobes longer than high, posterior angle extending downwards, with humeral sinus shallow ( Fig. 9B ). Fore coxae with 1 small spine. Fore and middle femora unarmed on ventral surfaces; hind femora with 5–6 spines on ventral surface. Fore and middle tibiae with 4 pairs of spurs and 1 pair of apical spurs on ventral surfaces; middle tibiae with 1 apical spur on internal margin of dorsal surface; hind tibiae dorsally with 6 pairs of spines, apices with a large internal spur and a small external spur, ventral surface with 1 pair of subapical spurs and 2 pairs of apical spurs. Tegmina obviously beyond the apex of hind femora, extending the apex of hind tibiae; hind wings slightly longer than tegmina.

Abdomen. Cerci conical and slender ( Fig. 9H ). Seventh abdominal sternite prolonged, basal third of ventral surface with 1 pair of roughly triangular and stout processes with slightly converging lateral margins ( Fig. 9E ), its apices obtuse and curved dorsally ( Fig. 9F ); posterior margin straight ( Fig. 9E ). Subgenital plate inverted trapezoidal, with converging, slightly convex lateral margins; posterior margin straight ( Fig. 9E ). Ovipositor of medium length, behind base moderately upcurved, margins slightly and gradually narrowing towards tip, tip rounded ( Fig. 9I ).

Male. Unknown.

Coloration. Body green when alive, apices of all legs yellowish green.

Material examined. Holotype: female, Bawangling, Changjiang , Hainan, June 2, 2024, coll. by Yating Qin and Yizhen Yao . Paratype: 1 female, Changjiang, Hainan, May 24, 2024, coll. by Yating Qin and Yizhen Yao .

Measurements (mm). BL: ♀ 21.4–24.9; PL: ♀ 5.3–5.2; TL: ♀ 30.3–34.4; HFL: ♀ 13.6–15.0; OvL: 18.6– 19.1.

Distribution. Hainan (Changjiang).

Discussion. The new species differs from Sinagryllacris cirrhatis Zhang & Bian, 2023 in the following: female seventh abdominal sternite with 1 pair of triangular and stout processes, its apices obtuse.

Etymology. The species is named after the female seventh abdominal sternite with 1 pair of roughly triangular and stout processes.

Figures

FIGURE 9. Sinagryllacris biprocera sp. nov. Female (holotype): 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–H. seventh abdominal sternite and subgenital plate: E. ventral view, F, H. ventral and lateral view, G. lateral view; I. ovipositor in lateral view.

FIGURE 10. Habitus of raspy cricket from Hainan Province. A. Female, Sinagryllacris biprocera sp. nov.; B. Male, Ocellarnaca hainanensis sp. nov..