Alloteratura (Alloteratura) curvata, Duan & Wang & Cui & Chang, 2024

Duan, Yueting, Wang, Yang, Cui, Peng & Chang, Yanlin, 2024, One new species of the genus Alloteratura Hebard, 1922 (Tettigoniidae: Meconematinae) and supplement of Alloteratura (Alloteratura) flabellata Xin & Shi, 2019, Zootaxa 5481 (4), pp. 490-494 : 491

Alloteratura (Alloteratura) curvata sp. nov., Chinese name DZAEDḆdz

( Fig.1 )

Description. Body small. Fastigium verticis conical, apex rounded, dorsal surface with a thin longitudinal sulcus. Eyes nearly globular, protruding forward. Apical segment of maxillary palpus significantly shorter, about 1/3 length of subapical one, apex enlarged. Anterior margin of pronotum nearly straight, posterior margin rounded, lateral lobe slightly longer than high; humeral sinus shallow. Thoracic foramen large, oval, exposed. Tegmina long, surpassing apices of hind femora, apices rounded. Hind wings slightly longer than tegmina.

All femora without spines on ventral surfaces, apices of genicular lobes of hind femora obtusely rounded. Fore coxa with one short spine, tibia with 3 long spines on internal margin and 4 long spines on external margin of ventral surface, tympana of fore tibiae open on both sides. Mid tibia with 3 long spines on internal margin and 4 long spines on external margin of ventral surface. Hind tibia with 27–33 spines on internal and external margins of dorsal surface separately, bearing 1 pair of dorsal apical spurs and 1 pair of ventral apical spurs.

Male. Lateral surface of ninth abdominal tergite expanded backwards ( Fig. 1C ), separated into two branches, dorsal branch ( Fig. 1D ) sinuated, external margin in the middle with a triangle-shaped expansion, apex subacute; ventral branch ( Fig. 1G ) curved upwards, basal area broad, apical area narrow, apex acute. Last abdominal tergite ( Fig. 1D ) with a shallow and broad postero-median notch, lateral lobes triangle-shaped, apices rounded. Cerci long, curved downwards obviously, stout at base, tapering towards apices, subapical parts crossing each other, apical areas expanded, lobe-shaped, apices acute. Subanal plate ( Fig. 1E ) sclerotized, dorsal surface of apex flat, subapical area with a pair of spine-shaped processes on lateral margins. Basal area of subgenital plate slightly broad, subapical area becoming narrow, posterior margin straight, subapex of subgenital plate with short conical styli on ventral surface, apices obtuse.

Female. Subgenital plate nearly trapezoidal, wider than long, width is about 2 times as length, fused with seventh abdominal sternite, posterior area protruded in the middle, apex rounded. Cercus long, basal half slender, middle area slightly stout, apex acute. Ovipositor slightly longer than body length, straight, dorsal and ventral margins smooth, with tip subacute.

Coloration. Body yellowish green. Eyes reddish brown. Dorsum of head with a pair of longitudinal yellow stripes after eyes. Disc of pronotum with a pair of longitudinal yellow stripes on lateral margins. Tegmina cells of near costal margins brown.

Measurements (mm). Body: ♂ 11.2, ♀ 11.0–11.45; pronotum: ♂ 3.5, ♀ 3.6–3.75; tegmen: ♂ 12.75, ♀ 12.7–13.05; hind femur: ♂ 10.1, ♀ 9.9–10.5; ovipositor: 12.0–12.15.

Material examined. Holotype: ♂, Tongbiguan, Yingjiang, Yunnan, 27 October, 2019, collected by Peng Cui. Paratypes: 2♀, Tongbiguan, Yingjiang, Yunnan, 27 October, 2019, collected by Peng Cui.

Distribution. China (Yunnan).

Discussion. The new species differs from the known species of the genus Alloteratura by male ninth abdominal tergite specialized, separated into two branches and male cerci long and curved downwards.

Etymology. The name of new species is derived from curved male cerci, from Latin curv- (curved).

Figures

FIGURE 1. Alloteratura (Alloteratura) curvata sp. nov.: A–B. head and pronotum: A. dorsal view; B. lateral view; C–G. apex of abdomen: C. lateral view; D. dorsal view; E. latero-apical view; F. apices of cerci in lateral view; G. ventral view; H. ovipositor in lateral view; I. subgenital plate in ventral view. Abbreviation: d. dorsal branch of ninth abdominal tergite; sa. subanal plate; s. subgenital plate; v. ventral branch of ninth abdominal tergite. C–G. male; A–B, H–I. female.