Sinocyrtaspis angustisulcus Chang, Bian & Shi

Chang, Yan-Lin, Bian, Xun & Shi, Fu-Ming, 2012, Remarks on the genus Sinocyrtaspis (Orthoptera: Tettigoniidae: Meconematinae) from China, Zootaxa 3495, pp. 83-87 : 84-85

Sinocyrtaspis angustisulcus Chang, Bian & Shi , sp. nov.

( Fig. 1 )

Male. Body stout. Head short, frontis verticis slightly oblique backwards. Fastigium verticis conical, apex obtusely rounded, furrowed in midline. Eyes subglobular, projecting forwards. Apical segment of maxillary palpus slightly longer than subapical one, apex slightly enlarged.

Pronotum ( Figs. 1 A, B) projecting, anterior margin slightly straight, anterior and middle sulci indistinct, posterior transverse sulcus comparatively distinct, metazona conspicuously raised and enlarged, posterior margin obtusely rounded; posterior area of paranota broadened, without humeral sinus.

Procoxa with a spine, all femora without spines on ventral margins, protibiae with 4 spines on inner and outer margins of ventral surface separately; apex with a pair of ventral spurs; tibial tympana open on both sides, elongate. Mesotibiae with 2 spines on inner side and 5 spines on outer side of ventral margin, and with a pair of ventral apical spurs. Posttibia with a pair of dorsal apical spurs, and 2 pairs of ventral apical spurs, right post leg damaged.

Tegmina brachypterous, completely hidden under metazona of pronotum; hind wings absent.

Tenth abdominal tergite ( Figs. 1 C, D) projecting, comparatively long, basal half broad, the middle constricted, apical half slightly enlarged laterally; apices of the lateral lobes obtusely rounded, the notch on posterior margin narrower and longer, length more than 2 times of its width. Subgenital plate ( Fig. 1 F) elongate, basal area broad, posterior margin triangularly concave. Styli shorter on apices of lateral margins of subgenital plate. Genitalia sclerotized, longer than tenth abdominal tergite, apex slightly enlarged, quadratus, the centre of dorsal margin with a deep notch. Cercus ( Figs. 1 C, E) mostly exposed, but not concealed by tenth abdominal tergite, short, basal area stouter, apex obtusely rounded; subapical area with a blunt hook ( Fig. 1 E).

Coloration. Body light yellow, probably green when alive. Dorsum of head with a longitudinal brown stripe. Disc of pronotum with a pair of longitudinal brown stripes, broadening backwards, between area light brown. Dorsal margin of abdomen with a longitudinal brown stripe, reaching posterior margin of tenth abdominal tergite. Tibial spines, spurs and apices of claws brown.

Type material. Holotype: 3, Badagongshan, Sangzhi, Hunan, China, 14 August, 2001, collected by Fu-Ming Shi.

Measurements (mm). Body (from apex of fastigium verticis to posterior margin of tenth abdominal tergite): 3 11.0; pronotum: 3 6.5; postfemora: 3 8.7.

Discussion. The new species is allied to Sinocyrtaspis brachycercus sp. nov., but differs in the following: disc of pronotum with a pair of longitudinal brown stripes; posterior margin of male tenth abdominal tergite with a narrow and long notch (length more than two times of it’s width); male cercus almost exposed, of unique shape.

Etymology. The name of the new species is derived from male cercus morphology, Latin ‘ angus’ and ‘ sulcus ’.

Distribution. China (Hunan).

Figures

FIGURE 1. Sinocyrtaspis angustisulcus sp. nov., male holotype: A. pronotum in dorsal view; B. pronotum in lateral view; C. tenth abdominal tergite in dorsal view; D. apex of abdomen in lateral view; E. cercus in lateral view; F. s ubgenital plate in ventral view.