Capnogryllacris nigromarginata hainanensis Liu, Lu & Bian, 2022

Liu, Jing, Lu, Xiangyi, Zhang, Qianwen, Wu, Xiangyi, Yang, Dongdong & Bian, Xun, 2022, Contribution to the knowledge of Chinese Gryllacrididae (Orthoptera) V: Further study on the Chinese Capnogryllacris and comment on the phylogenetic relationships of the Gryllacrididae, Zootaxa 5099 (1), pp. 1-45 : 12-14

Capnogryllacris nigromarginata hainanensis Liu, Lu & Bian ssp. nov.

海南āä烟ẽȃ

Figs. 15–17

Description. Size large for genus. Fastigium verticis narrow, about half as broad scape, margins not raised. Face with scattered impressed dots ( Fig. 15A ). Scape as long as eye. Eyes ovoid. Ocelli inconspicuous.

Anterior margin of pronotum projected in middle, posterior margin nearly straight ( Fig. 15B ).

Fore coxae with 1 small spine; fore and middle femora longer than pronotum, unarmed on ventral surfaces; tibiae with 5 pairs of spurs on ventral surfaces, the spurs decreasing in size to minute apical ones. Hind femora with 14–15 small internal and 8–10 external spines on ventral surface; hind tibiae with 6 pairs of spines on dorsal surface, apical area with 1 pair of dorsal spurs and 2 pairs of ventral spurs. Hind femora of male specimen from Guangdong with 10–14 internal and 10 external spines on ventral surface.

Tegmina macropterous, surpassing the ninth abdominal tergite and reaching the apical third of hind tibiae ( Fig. 16 ). Tegmina (specimen from Hainan): radius with RS branching little after middle area of tegmen, both forked near tip; media anterior free from base; cubitus anterior at base single branched, after divides into two branches before basal quarter, the anterior branch makes a curvature and receives a short connection branch from MA, in left tegmen it remains short distance then divides into MP and CuA1, while right tegmen remains single branched MP+CuA1 till tip; cubitus posterior undivided, free throughout; with 4 anal veins, the last two with common stem. Hind wings hyaline, surpassing than tegmina slightly longer.

Tegmina (specimen from Jilongding, Guangdong, XZ192, Fig. 17H–I ). In left tegmen, MA divides into two veins; cubitus anterior free from base, undivided. While right tegmen, CuA at base single branched, after divides into two branches about basal quarter, the anterior branch makes a curvature and receives a short connection branch from MA and remains single branched MP+CuA1 till tip.

Second and third abdominal tergites without stridulatory pegs ( Fig. 15D ). Ninth abdominal tergite curved downwards, split into 2 lateral lobes, spine-like, which crossed and pointed outside, the apical area of lateral lobe slender, apices acute ( Fig. 15G–H ). Cerci conical, nearly straight, apices subacute. Subgenital plate wider than long, anterior margin nearly straight, posterior margin nearly semicircular, slightly concave in middle ( Fig. 15G ). Styli slender, longer than other species of the genus, inserted on both sides of subgenital plate near apex.

Coloration. Body tawny. Eyes brown. Ocelli yellowish. Mandibles black. Internal margins of antennal sockets black, basal areas of scape and pedicel, and basal articles of flagellum black brown, the other parts of flagellum yellowish brown. Dorsal surface of head with one pair of black stripes, between which brown ( Fig. 15A ). Pronotum with black margins ( Fig. 15B ). Apical areas of femora and basal area of tibiae of all legs black. All spines on hind legs black, the other parts of hind femora and tibiae tawny.

Measurements (mm). Male (holotype): BL 36.0, PL 11.0, TL 43.0, HFL 25.0; male (XZ192): BL 40.3, PL 8.2, TL 39.6, HFL 21.6.

Material examined. Holotype: male, Jianfengling, Hainan, May 5, 2021, coll. by Yunhu Mo. Other specimen: 1 male (XZ192), Jilongding , Guangdong, May 23, 2021, coll. by Xingmian Zhou.

Distribution. Guangdong (Yangchun) and Hainan (Bawangling, Diaoluoshan, Jianfengling, Limushan,Yinggeling).

Remark. The new subspecies from Hainan Island resembles the nominate subspecies Marthogryllacris nigromarginata nigromarginata based on the color pattern, but differs in a number of characters: styli more slender and longer than the latter subspecies, and the posterior margin of male subgenital plate wider.

Etymology. Named with reference to Hainan Island, the type locality of the subspecies.

Figures

FIGURE 15. Capnogryllacris nigromarginata hainanensis ssp. 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–H. apex of abdomen: E. lateral view, F. dorsal view, G–H. ventral view.

FIGURE 16. Capnogryllacris nigromarginata hainanensis ssp. nov.. Male: A–B. habitus in lateral view; C–D. tegmina in dorsal view: C. left tegmen, D. right tegmen.

FIGURE 17. Capnogryllacris nigromarginata hainanensis ssp. nov.. Male: A. head in frontal view; B–C. head and pronotum: B. lateral view, C. dorsal view; D–G. apex of abdomen: D. lateral view, E. apical view, F. apico-ventral view, G. ventral view; H–I. tegmina in dorsal view: H. left tegmen, I. right tegmen.