Ultragryllacris pulchra rubricapitis Bin & Bian, 2021

LU, XIANGYI, LUO, HAIYU, ZHANG, QIANWEN & BIAN, XUN, 2023, Comparative mitogenome analysis and phylogenetic inference of the genus Ultragryllacris (Orthoptera: Gryllacrididae), Zootaxa 5230 (4), pp. 439-455 : 451-454

Ultragryllacris pulchra rubricapitis Bin & Bian, 2021

Figures 10–12

Description. Male. Body large. Fastigium verticis approx. 1.7 times as broad as scape. Face with very fine transverse riffles and sparse punctures ( Fig. 10A–B ). Ocelli distinct, median ocellus is very large.

Pronotum with anterior margin slightly projecting, posterior margin nearly straight; lateral lobes longer than high, posterior margin of ventral margin slightly extending downward ( Fig. 10C–D ).

Fore coxae with 1 spine. Fore and middle femora unarmed on ventral surfaces, hind femora with 12–17 internal and 9–10 external spines on ventral surface. Fore and middle tibiae with 5 pairs of ventral spurs, including 1 pair of apical ones; hind tibiae with 7 internal and 6–7 external 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.

Wings developed well, far surpassing apex of abdomen ( Fig. 12A ). Tegmina ( Fig. 12B–C ): Radius with two branches after the middle area of tegmen, both forked near tip; anterior media free from base. Anterior cubitus forking at basal third into two veins, with the first branch making a curvature and receiving an oblique connection vein from MA, and fused as MP+CuA1, which is undivided in left tegmen ( Fig. 12B ), but divided again into two parallel branches, MP and CuA1, in right tegmen shortly after MP+CuA1 ( Fig. 12C ); the posterior branch (CuA2) remaining single-branched. Both tegmina: posterior cubitus undivided, free throughout; with 4 anal veins, and last two with the common stem.

Second and third abdominal tergites without stridulatory pegs. The ninth abdominal tergite prolonged, and curved downwards ( Fig. 10F ), forming 1 strong trapeziform process with a nearly truncate apex ( Fig. 10G ), the ventral surface with a vertical ridge coalesced by 2 lobes whose have a sclerite at basal area ( Fig. 10H ). The tenth abdominal tergite is hidden. Cerci is short and slender. Subgenital plate is basally broad, posterior margin with a concavity in the middle, and apices of lateral lobes obtusely rounded ( Fig. 10I ). Styli robust, located on both sides of the subapical area of subgenital plate ( Fig. 10I ).

Female. Ventral surface of the seventh abdominal sternite with a pair of small oval pits; posterior margin with median concavity and the lateral margins are obtuse ( Fig. 11G ). Intersegmental membrane between the seventh sternite and subgenital plate provided with some transversal folds on lateral areas and a short sclerotised transverse bulge in the middle area, the transverse bulge with compressed apico-lateral angles ( Fig. 11G ). Lateral margins of subgenital plate narrowing, posterior margin with middle concavity ( Fig. 11G ). Ovipositor elongate straight, dorsal and ventral margins smooth, basal area stout, gradually narrowing, apices narrowly rounded ( Fig. 11H ).

Coloration. Body yellowish brown. Clypeus, labrum, and mandibles blackish brown ( Fig. 10A–B , 11A ). Internal margins and ventral margins of antennal cavities black, scape with black spots ( Fig. 10B ). Eyes blackish brown, with 1 small black spot under the ventral margins on each side; ocelli yellowish, lateral margins of median ocellus with 1 pair of black spots ( Fig. 10B ). Doral surface of head with 1 large black spot behind antenna on each side, between the area with irregular black spot along the midline ( Fig. 11C ). Pronotum with 2 connected black spots at anterior margin and a transverse band at posterior margin, anterior and posterior rims also black ( Fig. 11C ). Genicular areas and basal areas of tibiae of all legs black; hind tibiae with black spots at bases of dorsal spines ( Fig. 12A ).

Material examined. 1 male, Nanping, Simao , Yunnan, August 28, 2021, coll. by Zhemin Su ; 1 female, other information as male.

Measurements (mm). Male: BL 26.1, PL 7.3, TL 34.8, HFL 18.4; Female: BL 37.9, PL 7.4, TL 36.1, HFL 21.0, OvL 27.2.

Distribution. China (Yunnan).

Discussion. Although the species delimitation divided the three specimens of Ultragryllacris into two MOTUs, but the specimens from Simao, Yunnan has slight differences from Ultragryllacris pulchra rubricapitis Bin & Bian, 2021 in: face brownish yellow ( Figs. 10A–B , 11A ); pronotum with brownish margins, anterior margin with 2 connected black spots ( Figs. 10C–D , 11B ); fore tibiae brownish yellow with black spot at basal area ( Fig. 12A ); process of male ninth abdominal tergite sub-rectangular in dorsal view, subapical areas of lateral margins not constricted ( Fig. 10G–H ); the medial concavity of male subgeintal plate slightly wide at posterior margin ( Fig. 10I ); female subgenital plate shorter than ( Fig. 11G ). Therefore, we regarded new findings as a geographical population of Ultragryllacris pulchra rubricapitis Bin & Bian, 2022 .

Figures

FIGURE 10. Ultragryllacris pulchra rubricapitis Bin & Bian, 2021. Male: A–B. head in frontal view; C–E. head and pronotum: C–D. dorsal view, E. lateral view; F–G, I. apex of abdomen: F. lateral view, G. apico-dorsal view, I. ventral view; H. ninth abdominal tergite in ventral view.

FIGURE 11. Ultragryllacris pulchra rubricapitis Bin & Bian, 2021. Female: A. head in frontalview; B–C. head and pronotum: B. dorsal view, C. lateral view; D. second and third abdominal tergites in lateral view; E–G. apex of abdomen: E. dorsal view, F. lateral view, G. ventral view; H. apices of ovipositor in lateral view.

FIGURE 12. Ultragryllacris pulchra rubricapitis Bin & Bian, 2021. A. habitus in lateral view; B–E. tegmina in dorsal view: B, D. left tegmen, C, E. right tegmen; A–C. male; D–E. female.