Glolarnaca flata, Luo & Zhang & Bian, 2024

Luo, Ting, Zhang, Hui & Bian, Xun, 2024, Contribution to the knowledge of Chinese Gryllacrididae (Orthoptera: Ensifera: Stenopelmatoidea) XXVI: New additions based on the specimens from Southern China, Zootaxa 5538 (6), pp. 546-560 : 552

Glolarnaca flata sp. nov.

ṿDzựüẽ

Figure 6

Description. Female. Body medium.

Head. Face ovoid; fastigium verticis about twice as wide as scape; fastigium frontis separated from fastigium verticis by a very fine suture ( Fig. 6A ). Ocelli indistinct.

Thorax. Anterior margin of pronotum faintly projecting in middle, posterior margin triangularly concave in middle ( Fig. 6B ); lateral lobes longer than high, anterior angle widely arched, posterior angle rounded, humeral sinus shallow ( Fig. 6C ). Fore coxae with 1 small spine. Fore and middle femora unarmed; hind femora ventrally with 9 internal and 10 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 slightly surpassing the apex of abdomen.

Abdomen. Second and third abdominal tergites each with few minute stridulatory pegs ( Fig. 6D ). Lateral margins of seventh abdominal sternite faintly convex and then converging after middle area; ventral surface in basal half convex and following with a transverse groove; posterior margin subtriangularly projecting, apical margin rounded, the ventral surface inconspicuously raised ( Fig. 6F ). Subgenital plate longer than wide, base covered by the projection of seventh sternite in middle ( Fig. 6E ); lateral margins gradually converging, posterior margin with a small median concavity ( Fig. 6E ). Ovipositor falcate, in subbasal area strongly, afterwards regularly upcurved and with gradually converging margins; tip narrowing, subacute ( Fig. 6G ).

Male. Unknown.

Coloration. Body brownish. Clypeo-frontal suture with 2 pairs of black spots. Between antennal sockets with 2 pairs of small black spots. Internal margins of antennal sockets with a small black spot. Fastigium verticis with 3 black spots, dorsum of head with 1 narrow obliquely longitudinal band on each side. Eyes black. Pronotum light brown with 3 pairs of small black spots and 1 pair of large black bands ( Fig. 6B ). Apical areas of all femora black, basal and apical areas of tibiae with black rings, the apical area slightly lighter. Tegmina brown.

Measurements (mm). Female: BL 20.03, PL 4.45, TL 21.85, HFL 9.91, OvL 9.44.

Material examined. Holotype: female, Caiyanghe, Puer , Yunnan, June 30, 2024, coll. by Siyu Pang and Ting Luo.

Distribution. Yunnan (Puer).

Discussion. The new species differs from Glolarnaca nigrimacula Yang, Lu & Bian, 2021 in the coloration of body and the shape of female subgenital plate ( Fig. 7F ).

Etymology. The new species name derives from the shape of female subgenital plate without longitudinal carinae.

Figures

FIGURE 6. Glolarnaca flata sp. nov. 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. subgenital plate in ventral view; F. seventh abdominal sternite in ventral view; G. apex of abdomen in lateral view.

FIGURE 7. Glolarnaca nigrimacula Yang, Lu & Bian, 2021. 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. subgenital plate in ventral view; F. seventh abdominal sternite in ventral view; G. apex of abdomen in lateral view.