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1.
记述采自陕西及西藏地区网翅蝗科蝗虫二新种,即秦岭异爪蝗Euchorthippus qinlingensis sp.nov.及黑膝雏蝗Chorthippus fusigeniculatus sp.nov..秦岭异爪蝗近似于邱氏异爪蝗Euchorthippus cheui及绿异爪蝗Euchorthippus hebaceus,其区别于二者为:1)前翅缘前脉域具闰脉;2)前翅中脉域与肘脉域等宽;3)雄性尾须细长弯曲,超过肛上板顶端;4)雄性下生殖板长锥形,顶圆;5)后足股节上膝侧片黑色;而又区别于邱氏异爪蝗为:1)前胸背板沟前区侧隆线略弯曲;2)不具宽的黑色眼后带;而又区别于绿异爪蝗为雌性前翅前缘脉域具一白色纵纹.黑膝雏蝗近似于呼城雏蝗Chorthippus huchengensis及郑氏雏蝗Chorthippus zhengi,其区别于二者为:1)前胸背板侧隆线间最宽处为最狭处宽的2.4倍;2)雄性中胸腹板侧叶间中隔最狭处宽为长的1.6倍;3)雄性前翅中脉域宽为肘脉域宽的6倍;而又区别于郑氏雏蝗为:1)前胸背板沟前区与沟后区等长;2)后足股节膝部黑色.模式标本保存于陕西师范大学动物研究所昆虫标本室.  相似文献   

2.
记述了采自江西省的二齿蝗属一新种:江西二齿蝗Bidentacrisjiangxiensis sp.nov、,并与近似种厂东二齿蝗 Bldentacris guangdongensis Zhenget Xie,1986进行了比较。  相似文献   

3.
记述采自贵州省小蹦蝗属一新种,即赤水小蹦蝗Pedopodisma chishuiensis sp.nov.该新种近似于佛坪小蹦蝗Pedopodisma fopingensis Zheng et Huo,主要区别为:1)复眼纵径为眼下沟长的1.4(♀)~2(♂)倍;2)前翅不到达中胸背板后缘(♂)或到达中胸背板后缘(♀);3)雄性下生殖板短锥形,顸尖;4)雌性下生殖板后缘中央具一个三角形突出.文中并附有中国小蹦蝗属分种检索表.模式标本保存于陕西师范大学动物研究所.  相似文献   

4.
记录采自辽宁省千山地区蝗虫一新属及一新种,定名为千山辽秃蝗Liaopodisma qinshanensis zheng, gen. ef sp.nov.,该新属近似于印秃蝗属Indopodisma Dov.-Zap.和蹦蝗属Sinopodisma Chang,其区别于两者的特点为:复眼的垂直直径为眼下沟长的2.25倍;前胸背板沟前区长度大于沟后区长的1.3~1.37倍;雌性下生殖板后缘两侧凹陷,中央突出,顶三角形。  相似文献   

5.
中国蝗虫的新属和新种:(直翅目:蝗总科)   总被引:1,自引:0,他引:1  
在我国西北和西南地区,采得蝗虫1新属4新种,即新疆蝗属,新属Xin jiangacris gen.nov.,红胫新疆蝗,新种X.rufitivis sp. nov.,黑翅牧草蝗,新种Omocestus nigripenmus sp. nov.,宁夏蛛蝗,新种Aervopedellus nangxiaensis sp. nov.及武陵山金色蝗,新种Chrysacris wulingshanensis sp.nov.  相似文献   

6.
系统研究了原金蝗属在我国的种类,共计有10种,其中包括1新种,即红胫原金蝗Eokingdonella burrusitibia sp.nov.该新种近似于西藏原金蝗Eokingdoenlla tibetana(Mistshenko),主要区别为:1)前胸背板后缘中央浅凹陷;2)前胸背板沟前区长为沟后区长的1.5倍;3)后足股节内侧基1/3黄色,端2/3黑色;下侧基3/4红色,端1/4黑色4)后足胫节上侧红色,下侧黑色,基部具淡色环;5)后足跗节黄褐色.附有分种检索表.模式标本保存于陝西师范大学动物研究所昆虫标本室.  相似文献   

7.
记述了采自广西大青山地区斑腿蝗科二新属及二新种,即拟越蝗属Tonkinacrisoides gen.nov.,广西拟越蝗Tonkinacrisoides guangxiensis sp.nov.,皱蝗属Rugulacris gen.nov.及红胫皱蝗Rugulacris rubitibialissp.nov.模式标本保存于陕西师范大学动物研究所昆虫标本室.  相似文献   

8.
记述来自云南的拟裸蝗属Conophymacris Willemse 1933一新种:楚雄拟裸蝗Conophymacris chuxiongensis sp.nov,模式标本保存于山东大学生物系无脊椎动物标本室。  相似文献   

9.
沼泽蝗属Mecostethus Fieb.是蝗总科、斑翅蝗科中的一个小属,目前全世界已知有9种,主要分布于欧洲、亚洲东北部和非洲北部。栖息的环境多为沼泽地区或湿度大、植被覆盖度较高的地区。我国已知有4种。记述采自吉林省白城市的沼泽蝗属一新种,即白城沼泽蝗Mecostethus baichengensis sp.nov.,并与其近似种做了比较。模式标本保存于东北师范大学生命科学学院动物标本室。  相似文献   

10.
系统地记述了分布于我国小车蝗属的种类,共计有8种,其中有一新种,即二斑小车蝗Oedaleus bimaculatus sp.nov.,附有中国小车蝗属分种检索表,模式标本保存于陕西师范大学动物研究所。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

19.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

20.
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