Radigryllacris mingzheni, 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 : 141-142

Radigryllacris mingzheni sp. nov.

DZKêšẽ

Figure 1

Description. Male. Body large.

Head. Face ovoid; fastigium verticis about twice as wide as scape; fastigium frontis separated from fastigium verticis by a very fine suture ( Fig. 1A ). Ocelli distinct; median ocellus obviously larger than lateral ocelli.

Thorax. Anterior margin of pronotum indistinct projecting in middle, posterior margin arched ( Fig. 1B ); lateral lobes longer than high, anterior angle widely arched, posterior angle rounded angular, humeral sinus shallow ( Fig. 1C ). Fore coxae with 1 small spine. Fore and middle femora unarmed; hind femora ventrally with 4 internal and 8–9 external spines. Fore and middle tibiae with 4 pairs of spurs and 1 pair of apical spurs on ventral surfaces, middle tibiae with 1 internal spur on dorsal surface. Hind tibiae dorsally with 6 pairs of spines and 1 pair of apical spurs, ventral surface with 1 pair of subapical spurs and 2 pairs of apical spurs. Wings surpassing the hind femora, hind wings slightly longer than tegmina.

Abdomen. Second and third abdominal tergites with few, very minute stridulatory pegs ( Fig. 1D ). Eighth abdominal tergite prolonged. Ninth abdominal tergite semi-globular: prolonged and down-curved; apical half furrowed in midline ( Fig. 1G ), at end of furrow split and on both sides of split area with an obtuse bump which triangular in apical view and more slender than other species of the genus ( Fig. 1H ), below bump with a wide process faintly curving dorsad ( Fig. 1H ). Subgenital plate almost twice as wide as long; posterior margin with an arched concavity, the lateral lobes rounded ( Fig. 1I ); styli roughly cylindrical and faintly incurved, inserted laterally on subapical area.

Female. Unknown.

Coloration. Body green. Wings brown with black cells. Eyes brown. Ocelli pale yellow.

Measurements (mm). BL ♂ 32.4, PL ♂ 7.4, TL ♂ 27.7, HFL ♂ 17.6.

Material examined. Holotype: male, Jianfengling, Ledong , Hainan, April 24, 2024, coll. by Mingzxhen Liu.

Distribution. Hainan (Ledong).

Discussion. The new species differs from Radigryllacris elongata (Bian & Shi, 2016) and Radigryllacris xiei (Bian & Shi, 2016) by the bump of male ninth abdominal tergite more slender and roughly triangular in apical view, the spine below the bump wider; the concavity of male subgenital plate deeper at posterior margin.

Etymology. Named in honor of Mr. Mingzhen Liu who sent us the specimen.

Figures

FIGURE 1. Radigryllacris mingzheni sp. nov. Male: 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. middle tibia in dorsal view; F–G, L. apex of abdomen: F. lateral view, G. apical view, I. ventral view; H. processes of ninth abdominal tergite in apical and slightly dorsal view.