Macroteratura (Macroteratura) inospina Chen, Cui & Chang, 2020

Chen, Lixuan, Cui, Peng, Zhuo, Zhao & Chang, Yanlin, 2020, Notes on the genus Macroteratura Gorochov, 1993 (Tettigoniidae: Meconematinae Meconematini) with description of one new species from China, Zootaxa 4857 (1), pp. 95-104 : 96-98

1. Macroteratura (Macroteratura) inospina Chen, Cui & Chang sp. nov.

( Fig. 1 )

Description. Male. Body small, medium sized for the tribe Meconematini . Fastigium verticis conical, apex bluntly rounded, with a median sulcus. Face is slightly sloping backwards. Apical segment of maxillary palpus equal to subapical one in length, slightly swollen apically. Eyes ovoid and distinctly protruding outward. Anterior margin of pronotum nearly straight, posterior margin triangularly rounded; anterior part narrower while posterior part of pronotum wider in dorsal view; lateral lobes longer than deep, humeral sinus indistinct. Thoracic foramen exposed, ovoid.

All femora without spines on ventral surface. Procoxa with a spine, protibia with 6–7 long spines on internal and external margins of ventral surface separately; tibial tympana open on both sides, oval. Mesotibia with 6–7 long spines on internal and external margins of ventral surface separately. Posttibia with 27–29 spines on internal and external margins of dorsal surface separately, with 8 outer and 2 inner spines on ventral surface, bearing 1 pair of dorsal apical spurs and 2 pairs of ventral apical spurs.

Tegmina elongate, anterior and posterior margins nearly parallel, distinctly surpassing apices of postfemora, apices rounded. Hind wings longer than tegmina.

Posterior margin of tenth abdominal tergite with a pair of generally symmetrical and long posterior processes, lamellate, narrow and thin; inner margin of subapical area with 1 spine and apical area with a notch. Cercus stout when viewed laterally; base slightly narrow, internal margin longitudinally concave, apical area slightly curved inwards, dorsal and ventral margins bearing 1 curved spine-like process respectively, dorsal process slender, elongate and slightly curved interiorly, but ventral one short, thick and slightly curved dorsad. Base of genitalia fused with subgenital plate and ventral margin with 1 pair of stout and short processes, its distal part bluntly rounded; distal half of genitalia exposed, slender, apex truncate.

Coloration. Body yellowish green, dorsal surface of head brown; eyes reddish brown; antennae blackish brown. Pronotal disc with a broad longitudinal brown stripe and its outer margins blackish brown, and with a thin longitudinal light yellow stripe in the midline, medial transverse sulcus blackish brown. Tegmen light brown, and exposed area of hind wing light brown. Apex of cercus with a dorsal spine brown. Apex of genitalia brown. Spines on tibiae with apices brown.

Female. Appearance is similar to male. Cercus conical, apex acute. Ovipositor nearly straight, dorsal valvulae as long as ventral ones, apices of dorsal valvulae acute and apices of ventral ones hook-shaped. Subgenital plate nearly trapezoid (deformed), basal area broad, basal margin concave.

Type material. Holotype: ♂, Tongbiguan, Yingjiang, Yunnan, 8 August, 2018, coll. Peng Cui. Paratype: 1♀, Tongbiguan, Yingjiang, Yunnan, 8 August, 2018, coll. Peng Cui.

Measurements(mm). Body: ♂ 15.2, ♀ 15.0; pronotum: ♂ 5.0, ♀ 4.5; postfemora: ♂ 15.0, ♀ 16.2; tegmina: ♂ 19.0, ♀ 18.6; ovipositor: 14.2.

Distribution. China (Yunnan).

Discussion. The new species slightly resembles Macroteratura (Macroteratura) thrinaca ( Qiu & Shi, 2010) and Macroteratura (Macroteratura) megafurcula ( Tinkham, 1944) , but differs in the following characters: the posterior process of male tenth abdominal tergite with 1 spine on inner margin of subapical area, apical area with a notch; cercus with 1 curved spine-like process on dorsal and ventral margins on apical area respectively; base of genitalia with 1 pair of stout and short processes on ventral margin, its apex truncate.

Etymology. The name of the new species is derived from the subapical area of posterior process of male tenth abdominal tergite with 1 spine on inner margin. Latin “ in- ” means inner margin; Latin “ spin -” means spine.

Figures

FIGURE 1. Macroteratura (Macroteratura) inospina Chen, Cui & Chang sp. nov., male: A–B. pronotum: A. lateral view; B. dorsal view; C–F. apex of abdomen: C. dorsal view; D. ventral view; E. lateral view; F. subgenital plate in ventral view; female: G. ovipositor in lateral view; H. subgenital plate in ventral view; g. distal half of genitalia; p. spine-like process of cercus apex on ventral surface.