甘肃省蚱科——新种记述(直翅目:蚱总科)

One new species of Tetrigidae from Gansu Province (Orthoptera: Tetrigoidea)

记述了采自甘肃省蚱科一新种,即圆肩蚱(Tetrix tereeshum erussp.nov.)。该新种近似于神农架蚱(Tetrix shenglonji-aensisZheng,L i and Wei),主要区别为:(1)头顶宽为1眼宽的2倍;(2)头顶前缘圆弧形,明显突出于眼前;(3)侧面观,颜面隆起在侧单眼前直;(4)前胸背板后突到达后足股节2/3处;(5)沟前区侧隆线平行;(6)肩角圆弧形;(7)肩部之间不具一对短纵隆线;(8)后翅到达后足股节中部;(9)中足股节明显大于前翅宽;(10)雌性下生殖板长大于宽。新种的模式标本保存于陕西师范大学动物研究所。

In this paper, one new species of Tetrigidae is described. Type specimens are deposited in the Institute of Zoology, Shaanxi Normal University.Tetrix tereshumereus sp. nov. This new species is allied to Tetrix shenglonjiaensis Zheng et al, but differs in ： （ 1 ） width of vertex 2 times the width of an eye ; （2） anterior margin of vertex round shape, distinctly produced before eyes ; （3） in profile, costal ridge not concave before lateral ocelus; （4） hind process of pronotum reaching two thirds of hind femur; （5） lateral keels of prozona parallel; （6） humeral angle round arc; （7） without a pair of short longitudinal keels between shoulders; （8） hind wing reaching the middle of hind femur; （9） width of midfemur distinctly larger than the width of elytra; （10） length of subgenital plate of females larger than width. Length of body： ♀ 9 - 11 mm; length of pronotum： ♀ 7 -7.5 mm; length of hind femur： ♀ 6 -7 mm. Holotype ♀ , Gansu： Tianzhu （Tanling） 103°1 ＇ E, 36°8, N, 2004 - 07 - 26, collected by Wang Yanfeng; paratype 1 ♀, as holotype; 1 ♀, Gansu： Yuzhong, 104°E, 35°8＇N, 2004-07-08, collected by Wang Yan-feng.