Metriogryllacris (Metriogryllacris) bimacula Yu, Liu & Bian, 2022 AṀaeḋỡ

Zhang, Qianwen, Pang, Siyu & Bian, Xun, 2022, Contribution to the knowledge of Chinese Gryllacrididae (Orthoptera) XII: Notes on the Chinese Metriogryllacris Karny, 1937, Zootaxa 5213 (1), pp. 36-48 : 37-38

Metriogryllacris (Metriogryllacris) bimacula Yu, Liu & Bian, 2022 AṀaeḋỡ

Figures 2 , 9E–F , 11A–C

Female (new description). Wings reaching the middle area of sixth abdominal tergite. Tegmina ( Fig. 9E–F ): In left tegmen, radius forks into two branches between middle and apical third of tegmen, R forked in subapical area; MA fused with R in basal third of tegmen, then raises from R. While right tegmen, R undivided; MA raises from R in basal fourth of tegmen, then together with RS and raises from the latter in apical area. Cubitus anterior free from base, which divides into CuA1 and CuA 2 in subapical area ( Fig. 9E ) or behind middle of tegmen ( Fig. 9F ). Both tegmina: Cubitus posterior undivided, free throughout; with 3 anal veins. Fore coxae with 1 small coxae. Fore and middle tibiae with 4 pairs of spines and 1 pair of apical spines; middle tibiae dorsally with 1 internal spine. Hind femora with 8–11 internal and 4–6 external spines on ventral surface; tibiae with 6 pairs of spines on dorsal surface, subapical area with 1 pair of ventral spines, apices with 1 pair of dorsal spines and 2 pairs of ventral spines. Second and third abdominal tergites each with two rows of stridulatory pegs ( Fig. 2D ). Seventh abdominal sternite longer than wide, posterior margin narrowly rounded; ventral surface with one sclerotized transverse fold ( Fig. 2F ). Subgenital plate transverse, posterior margin widely rounded, ventral surface semi-membranous along the midline, which as wide as the transverse fold of seventh abdominal sternite and the both sides slightly convex ( Fig. 2F ). Ovipositor short, apart from subbasal gradually and obliquely curved upward, apical area slightly curved dorsad, apices obtuse; basal area of ventral valvulae with 1 pair of lobate processes, its apices widely arched ( Fig. 2E ). Other characters (including coloration) as the male’s description ( Yu et al., 2022).

Material examined. 1 male and 2 females, Hongtan, Huaping , Guangxi, July 2, 2022, coll. by Xiangyi Lu and Siyu Pang ; 1 male and 1 female, Hongtan, Huaping , Guangxi, July 4, 2022, coll. by Xiangyi Lu and Siyu Pang ; 1 male, Hongtan, Huaping , Guangxi, July 5, 2022, coll. by Xiangyi Lu and Siyu Pang ; 1 female, Hongtan, Huaping , Guangxi, July 6, 2022, coll. by Xiangyi Lu and Siyu Pang ; 1 male and 1 female, Hongtan, Huaping , July 8, 2022, coll. by Xiangyi Lu and Siyu Pang ; 1 female, Huangsha, Lingui , Guangxi, July 9, 2022, coll. by Xun Bian ; 1 female, Anjiangping, Huaping , Guangxi, July 13, 2022, coll. by Xiangyi Lu, Siyu Pang and Huan Meng ; 1 female, Hongtan, Huaping , Guangxi, July 24, 2022, coll. by Siyu Pang, Pinying Rong and Huan Meng ; 2 males and 2 females, Hongtan, Huaping , Guangxi, July 25, 2022, coll. by Siyu Pang, Pinying Rong and Huan Meng ; 3 males and 4 females, Hongtan, Huaping , Guangxi, July 27, 2022, coll. by Siyu Pang, Pinying Rong and Huan Meng ; 1 male and 1 female, Hongtan, Huaping , Guangxi, July 28, 2022, coll. by Siyu Pang, Pinying Rong and Huan Meng ; 1 male, Hongtan, Huaping , Guangxi, July 29, 2022, coll. by Siyu Pang, Pinying Rong and Huan Meng ; 1 male, Hongtan, Huaping , Guangxi, July 30, 2022, coll. by Siyu Pang, Pinying Rong and Huan Meng ; 2 females, Hongtan, Huaping , Guangxi, August 1, 2022, coll. by Siyu Pang, Pinying Rong and Huan Meng ; 1 female, Anjiangping, Huaping , Guangxi, August 7, 2022, coll. by Siyu Pang, Pinying Rong and Huan Meng ; 1 female, Anjiangping, Huaping , Guangxi, October 2, 2022, coll. by Xiangyi Lu and Qianwen Zhang .

Measurements (mm). Female: BL 20.4–21.8, PL 4.9–5.4, TL 10.5–11.0, HFL 10.1–11.9, OvL 7.3–7.4.

Distribution. Guangxi (Lingui).

Figures

FIGURE 2. Metriogryllacris (Metriogryllacris) bimacula Yu, Liu & Bian, 2022. Female: A. head in frontal view; B–C. head and pronotum: B. dorsal view, C. lateral view; D. second and third abdominal tergites in lateral view; E. apex of abdomen in lateral view; F. seventh abdominal sternite and subgenital plate in ventral view.

FIGURE 9. Tegmina of Metriogryllacris spp. in dorsal view. A–D. Metriogryllacris (Metriogryllacris) hamata sp. nov.; E–F. Metriogryllacris (Metriogryllacris) bimacula Yu, Liu & Bian, 2022; A, C, E. left tegmen; B, D, F. right tegmen; A–B. male; C–D. female.

FIGURE 11. Habitus of Metriogryllacris spp. A–C. Metriogryllacris (Metriogryllacris) bimacula Yu, Liu & Bian, 2022; D. Metriogryllacris (Metriogryllacris) permodesta (Griffini, 1914); E. Metriogryllacris (Metriogryllacris) amitarum (Griffini, 1914); F. Metriogryllacris (Metriogryllacris) nigrilimbis Liu & Bian, 2021; A, D–F. male; B–C. female.