江苏网翅蝗科一新属一新种(直翅目:蝗总科)

记述了采自江苏泗阳县网翅蝗科1新属——苏蝗属Suacris gen.nov.及1新种——Suacris siyangensis sp.nov..该新属近似于牧草蝗属Omocestus I.Bol.,其主要区别特征为:前胸背板侧隆线微微弯曲,最宽处为最窄处的1.6～1.8倍;前翅肘脉域几乎等宽或略宽于中脉域;鼓膜器雄性宽卵形、雌性狭缝状.该新属也近似于拟草地蝗属Stenobothroides Xu et Zheng,其主要区别特征为:侧隆线明显且弯曲;雄性腹部末节无尾片;雄性下生殖板长锥形.新种模式标本保存于中国科学院西北高原生物研究所.1 苏蝗属,新属Suacris gen.nov. 模式种:泗阳苏蝗Suacris siyangensis sp.nov. 正模:1♂;副模:1♀,江苏泗阳,1957-Ⅸ-16,采集者未知. 体小型.头大而短,较短于前胸背板.头侧窝明显,呈长方形.颜面向后倾斜.中单眼较小于侧单眼.触角丝状,基部触角节宽大于长,向端部触角节渐渐变狭.前胸背板中隆线明显,侧隆线在沟前区微微弯曲,其最宽处约为最窄处的1.6～1.8倍;前胸背板后缘中央钝角形.前、后翅发达,超过后股节中部,前翅顶端圆形,无凹陷,前翅肘脉域几乎等宽或略宽于中脉域.中、后胸腹板侧叶全长均明显地分开.后足股节内侧具发音齿,可与前翅纵脉磨擦发音.后足胫节缺外端刺.鼓膜器:雄性宽卵形,雌性宽缝状.

A New Genus and a New Species of Grasshoppers from Jiangsu Province (Orthopters:arcypteridae)

The paper reports a new genus of Arcypteridae i.e. Suacris gen.nov.and a new species Suacris siyangensis sp.nov.The new genus is similar to Omocestus I.Bol.,but differs from the latter in:① Lateral carinae slightly curved,widest 1.6-1.8 times greater than narrowest.② Cubital area wider than or equal to medial area.③Tympanum organ distinct,♂ widely oval,♀ crevice-like.The new genus is also similar to Stenobothroides Xu et Zheng,but differs from the later in:①Lateral carinae obvious and curve.②Tergum of terminal abdomere without furcula.③Male subgenital plate long conica.Type specimens are deposited in Northwest Plateau Institute of Biology,the Chinese Academy of Sciences.