Phryganogryllacris nigra sp. nov.

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Figures 1–2

Description. Male. Body medium.

Head. Face ovoid with impressed scattered dots; fastigium verticis about two times as wide as scapes, separated by a very fine suture from fastigium frontis (Fig. 1A). Ocelli distinct, median ocellus slightly larger than lateral ocelli (Fig. 1A).

Anterior margin of pronotum faintly projecting in middle, posterior margin nearly straight (Fig. 1B); lateral lobes longer than high, anterior angle widely rounded, posterior angle rounded angular, ventral margin undulant, humeral sinus shallow (Fig. 1C).

Legs. Fore coxae with 1 small spine; fore and middle femora unarmed, tibiae ventrally with 4 pairs of spurs and 1 pair of apical spurs; dorsal surface of middle tibiae with 1 internal spine. Hind femora with 4–5 internal and 3–8 external spines on ventral surface; dorsal surface of tibiae with 6 pairs of spines, apices with 1 pair of dorsal spurs (the internal apical spur longer than external one) and 2 pairs of ventral spurs, ventral surface with 1 pair of apical spurs (Fig. 2E).

Tegmina and wings. Tegmina and wings longer, slightly surpassing the hind leg (Fig. 2E); hind wings slightly longer than tegmina. Tegmen (Fig. 2A, B): Radius with two branches, both forked near tip; media anterior free from base, but in basal area closely approached to R; cubitus anterior at base with a single branch that forks into two veins in about basal fourth, the anterior branch makes a curvature and receives a very short oblique connection vein from MA and shortly after divides again into two parallel branches, MP and CuA1, while the posterior branch (CuA2) does not divide further; cubitus posterior undivided, free throughout; with 4 anal veins, the last two with a common stem.

Abdomen. Second and third abdominal tergites each with two rows of stridulatory pegs (Fig. 1D). Eighth abdominal tergite prolonged. Ninth abdominal tergite prolonged, strongly bent down from dorsal surface, vaulted in lateral view (Fig. 1E); ventral margin arched (Fig. 1G); baso-lateral surface on both sides with a rather large acute process, which curved outward from middle area (Fig. 1H). Tenth abdominal tergite transverse, with 1 tubercular process in middle (Fig. 1J). Subgenital plate wider than long; basal margin straight, lateral margins convex on baso-lateral areas and then converging; posterior margin with a U-shaped concavity, the lateral lobes with internal margin shorter than external margin, apical margin obliquely (Fig. 1L). Styli short and depressed, apices truncate, inserted at apico-lateral margins of subgenital plate.

Female. Unknown.

Coloration. Body black. Fastigium verticis and fastigium frontis yellowish brown. Ocelli yellow. All tarsi yellow brown. Wings blackish. Pleura reddish yellow. Sterna with a longitudinal yellow stripe along the midline.

Measurements (mm). Male: BL 24.40, PL 5.50, TL 35.53, HFL 15.16.

Material examined. Holotype: male, Daweishan, Pinbian, Yunnan, June 9, 2024, coll. by Ziyi Yang.

Distribution. Yunnan (Pinbian).

Discussion. The new species differs from other species of Phryganogryllacris by body almost black (Fig. 2E), posterior margin of male subgenital plate with 1 large U-shaped concavity in middle (Fig. 1L).

Etymology. The new species is named for its black coloration.