Metriogryllacris (Metriogryllacris) obscurata Zhang, Pang & Bian, 2022

Zhang, Qianwen, Pang, Siyu & Bian, Xun, 2023, Contribution to the knowledge of Chinese Gryllacrididae (Orthoptera) XXI: New reports from Fujian Province, Zootaxa 5353 (1), pp. 60-66 : 64-65

Metriogryllacris (Metriogryllacris) obscurata Zhang, Pang & Bian, 2022 ĸüạșŝ

Figure 4

Female (first description). Wings reaching the posterior margin of fifth abdominal tergite. Fore and middle tibiae with 4 pairs of spurs and 1 pair of apical spurs on ventral surfaces; middle tibiae with 1 internal spine on dorsal surface. Hind femora with 14 internal and 6 external spines on ventral surface; tibiae with 5 – 6 internal and 6 external spines on dorsal surface, apices with 1 pair of dorsal spurs and 2 pairs of ventral spurs, subapical area with 1 pair of ventral spurs.

Second and third abdominal tergites with few, very minute stridulatory pegs ( Fig. 4E ). Seventh abdominal sternite longer than wide, posterior margin widely rounded; ventral surface concave following with one sclerotized transverse fold ( Fig. 4G ). Subgenital plate transverse, lateral margins convexly approaching, posterior margin arched, ventral surface with 1 pair of conical processes ( Fig. 4G ). Ovipositor short, apart from subbasal gradually and obliquely curved upward, apical area slightly curved dorsad, apices obtuse; basal area of ventral valvulae wide and then terminating into 1 pair of long spines, its apices directing backward ( Fig. 4F, H ). Other characters (including coloration) as the male’s description ( Zhang et al., 2022).

Measurements (mm). Female: BL 23.07, PL 4.66, HLF 10.75, TL12.13, OvL 7.43.

Material examined. 1 female, Kengdi, Shouning , Fujian, July 17, 2023, coll. by Fanduo Cai .

Discussion. The female sex of the species differs from that of Metriogryllacris (Metriogryllacris) bimacula Yu, Liu & Bian, 2022 by subgenital plate bearing 1 pair of conical processes on ventral surface ( Fig. 4G ); basal area of ventral valvulae prolonged into 1 pair of long spines.

Figures

FIGURE 4. Metriogryllacris (Metriogryllacris) obscurata Zhang, Pang & Bian, 2022. Female: A–B. head: A. frontal view, B. frontal and slightly lateral view; C–D. head and pronotum: C. dorsal view, D. lateral view; E. second and third abdominal tergites in lateral view; F–H. apex of abdomen: F. lateral view, G. ventral view, H. ventral and slightly lateral view.