Homogryllacris guizhouensis, Pang & Zhang & Bian, 2023

Pang, Siyu, Zhang, Qianwen & Bian, Xun, 2023, Contribution to the knowledge of Chinese Gryllacrididae (Orthoptera) XX: New descriptions from Guangxi and Guizhou, Zootaxa 5357 (1), pp. 121-130 : 124-126

Homogryllacris guizhouensis sp. nov.

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Figure 4

Description. Male. Body medium. Face with scattered impressed dots ( Fig. 4A ). Fastigium verticis about 1.5 times as wide as scape. Fastigium frontis separated from fastigium verticis by a very fine suture ( Fig. 4A ). Median ocellus distinct.

Anterior margin of pronotum arched, posterior margin nearly straight ( Fig. 4B ); lateral lobes longer than high ( Fig. 4C ).

Fore coxae with 1 spine. Fore and middle femora unarmed on ventral surfaces; hind femora with 5 internal and 6 external spines on ventral surface. Fore tibiae ventrally with 4 pairs of spurs and 1 pair of apical spurs. Middle tibiae with 4 pairs of spurs including 1 pair of apical spurs on ventral surface, dorsal surface with 1 internal spine. Hind tibiae with 5 pairs of spines on dorsal surface, subapical area with 1 pair of ventral spurs, apices with 1 pair of dorsal spurs and 2 pairs of ventral spurs.

Tegmina reduced, only the middle area of metanotum ( Fig. 4D ). Second and third abdominal tergites each had 2 rows of stridulatory pegs ( Fig. 4F ). Seventh abdominal tergite slightly longer than other sterna, middle area with 1 pair of copulatory depressions ( Fig. 4H ). Intersegmental membrane between seventh sternite and subgenital plate shorter with faintly transverse folds ( Fig. 4H ). Subgenital plate semicircular in general outline, posterior margin widely rounded with faintly median concavity. Ovipositor straight, margins slightly converging in apical half, apices acute ( Fig. 4I ).

Male. Unknown.

Coloration. Body reddish black.Antennal cavities with black margins ( Fig. 4A ). Scape with black spots at basal and apical areas of internal margin, basal areas of pedicelli with black spots on internal margin. Fastigium frontis with 1 pair of small black spots between antennal cavities ( Fig. 4A ). Fastigium verticis with 1 transversal black stripe ( Fig. 4A ). Dorsal surface of head with two longitudinal black spots along the midline ( Fig. 4B ). Pronotum almost black with irregular yellowish spot at lateral lobes ( Fig. 4C ). Apical areas of all femora and basal areas of all tibiae purpureal. Tegmina brown ( Fig. 4D ). Abdominal tergites reddish black. Ovipositor brown.

Measurements (mm). Female: BL 21.21, PL 4.48, TL 3.69, HFL 10.75, OvL 18.96.

Material examined. Holotype: female, Nayong , Guizhou, July 10, 2023, coll. by Yao Zhang.

Distribution. Guizhou (Nayong).

Discussion. The new species differs from Homogryllacris irregularis Lu, Zhang & Bian, 2022 by the following: frons yellow brown without black spots ( Fig. 4A ); dorsal surface with narrow black band; pronotum almost black ( Fig. 4B ); dorsal surface of abdomen reddish black; posterior margin of female subgenital plate rounded without median concavity ( Fig. 4H ).

Etymology. Named after the type locality.

Figures

FIGURE 4. Homogryllacris guizhouensis sp. nov. Female: A. head in frontal view; B–C. head and pronotum: B. dorsal view, C. lateral view; D. wings in lateral view; E. second and third abdominal tergites in lateral view; F–G. apex of abdomen F. dorsal view, G. lateral view; H. seventh abdominal sternite and subgenital plate in ventral view; I. apices of ovipositor in lateral view.