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1.
在湖北省应山市三潭风景区发现了蚱属昆虫驼背蚱Tetrix gibbosa.驼背蚱头顶前缘平直,前胸背板侧面观上缘球形隆起,后突到达后足股节2/3处,后翅短,仅达后足股节基部1/3处.标本保存于信阳师范学院生命科学学院.  相似文献   

2.
记述了在中国分布的蟾蚱属Hyboella7种,其中有二个新种,即缺翅蟾蚱Hyboella aelytra sp.nov。及贵州蟾蚱Hyboella guizhouensis sp.nov.,并具有分种检索表及各个种的分布。模式标本保存于陕西师范大学动物研究所。缺翅蟾蚱Hyboella aelytrasp.nov.近似于亨氏蟾蚱Hyboella heihrichi,其区别于后者为:(1)头顶宽为一眼宽的1.5倍;(2)前胸背板后突顶尖;(3)肩部之间具有一对短纵隆线;(4)缺前翅,具退化的后翅。贵州蟾蚱Hyboella guizhouensis sp.nov.近似于广西蟾蚱Hyboella guangxiensis,其区别于后者为:(1)头顶与一眼等宽;(2)前胸背板较光滑;(3)前胸背板中隆线全长宽整;(4)侧面观背板上缘平直,仅在肩部前略隆起;(5)沟前区侧隆线平行;(6)前、中足股节下缘平直;(7)后足跗节第1节为第3节长的2倍,第1跗节下之第3垫大于第1、2垫。  相似文献   

3.
记述采自广西九万大山地区蟾蚱属一新种,即断隆蟾蚱Hyboella interrupta sp.nov.,该新种近似于长背蟾蚱Hyboella longinota Zheng et Jiang,主要区别为:1)头顶宽略大于一眼宽;2)前胸背板沟前区侧隆线短,直;3)前胸背板后突不到达或刚到达后足股节的顶端;4)后翅不到达前胸背板后突的顶端,仅到达后足股节的中部.模式标本保存于陕西师范大学动物研究所.  相似文献   

4.
记述采自广西九万大山地区佛蝗属一新种,即九万山佛蝗Phlaeoba jiuwanshanensissp.nov.该新种近似于暗色佛蝗Phlaeoba tenebrosaWalker,主要区别为:(1)雄性触角超过前胸背板后缘;(2)前胸背板侧隆线明显;(3)背板背面具明显的不规则的纵纹和大刻点;(4)中胸腹板侧叶间中隔近方形;(5)前翅超过后足股节顶端.模式标本保存于陕西师范大学动物研究所.  相似文献   

5.
1986年山西省农牧厅植保植检总站在五台山地区进行蝗虫调查时,采到金色蝗属Chrysacris Zheng蝗虫一新种,现记述如下.模式标本保存于陕西师范大学动物研究所. 白条金色蝗.新种Chrysacris albilinea sp.nov. 雌性体中型,头部略短于前胸背板.头顶宽短、顶圆,在复眼前最宽处为头顶长度的1.2倍;头顶具明显的中隆线;眼间距较宽,其宽度为触角间颜面隆起宽的3倍;缺头侧窝.颜面侧观倾斜,与头顶成锐角形;颜面隆起狭,渐向唇基扩大,全长具浅纵沟,直达唇基.触角狭剑状,超过前胸背板后  相似文献   

6.
广西金城江地区蚱科六新种(直翅目:蚱总科)   总被引:6,自引:0,他引:6  
记述采自广西金城江地区蚱科昆虫六新种,即短翅庭蚱Hedotettix brevipennis sp. nov.、圆肩柯蚱Coptotettix circinihumerus sp. nov.、河池柯蚱Coptotettix hechiensis sp. nov.、凹缘蚱Tetrix curuimarginus sp. nov.、短背蚱Tetrix brachynota sp. nov.及白纹悠背蚱Euparatettix albonemus sp. nov.,并首次记载防城柯蚱Coptotettix fangchengensis Zheng et Jiang的雄性以及齿股蚱Tetrix dentifemura Zheng et al的雌性.模式标本保存于陕西师范大学动物研究所标本室。  相似文献   

7.
系统记述在中国分布的悠角蚱属15种,内有1新种即伪瑞氏悠角蚱Eucriotettix pararidleyi sp.nov。该新种近似于瑞氏悠角蚱Eucriotettix ridleyi Gunther,1938,主要区别为:前胸背板中隆线全长明显,前胸背板后突伸达后足胫节顶端。附有悠角蚱属研究历史及中国悠角蚱属分种检索表。新种的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   

9.
在整理采自云南省蚱科的标本中,发现有瘤蚱属(Thoradonta Hancock)一新种,现报道如下。模式标本保存于陕西师范大学生物系蝗虫研究室。澜沧瘤蚱 Thoradonta lancangensis,新种雌性:体小型,体上密具颗粒和瘤突。头短,头顶的宽度大于一个复眼宽的1.6倍,中隆线在前缘处略突出,侧面观略微突出于复眼之前,颜面隆起侧观呈波状,在一对单眼之间  相似文献   

10.
在整理由甘肃省采得的蝗虫标本时发现有癞蝗科短鼻蝗属的一个新种,兹记述如下。新种模式标本保存于陕西师范大学生物系。甘肃短鼻蝗Filchnerella gansuensis,新种雄性:体中小型,头及前胸背板的颗粒状隆起较少。颜面隆起狭,具中纵沟,侧缘近乎平行,侧面观在触角之间略突出,颜面侧隆线低,从背面看不到,头顶宽,侧缘隆起,中央凹陷,具小颗粒和短隆线。触角丝状,超过前胸背板后缘,中段一节的长度为宽度的2倍。复眼近圆形,复眼纵径与横径及眼下沟等长。前胸背板屋脊形,为后横沟  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.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

13.
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   

14.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

15.
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   

16.
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   

17.
本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。  相似文献   

18.
19.
The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to  相似文献   

20.
Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with  相似文献   

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