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1.
中国19种蜡蝉的核型研究(同翅目:蜡蝉总科)   总被引:3,自引:1,他引:2       下载免费PDF全文
田润刚  张雅林  袁锋 《昆虫学报》2004,47(6):803-808
 研究了中国19种蜡蝉的染色体数目、性别决定和染色体行为。2n=28(26+XO)被认为是蜡蝉科的原始核型特征。由于蜡蝉精巢具有被膜,减数分裂前期Ⅰ具有弥散期,因此作者认为蜡蝉与半翅目的关系更为密切。  相似文献
2.
Abstract:  A new taxon of plant hopper, Celinapterixini, is erected based on Celinapterix bellissima gen. et sp. nov. from the Upper Palaeocene Maíz Gordo Formation, north-west Argentina. Its phylogenetic relationships within the Fulgoroidea and Nogodinidae are discussed. The Danish Eocene species Hammapterix paucistrata (Henriksen) is transferred to the Nogodinidae and placed in a new genus, Henriksenopterix , based on wing-venation characters. The new plant hopper is an unusual case of articulated preservation from the Maíz Gordo Formation. The palaeoenvironment is interpreted as a carbonate mudflat subenvironment with a low flow of energy, created during a period of contraction of the lacustrine system. The plant hopper is considered to have sunk and been buried in a soupy substrate. Early fossil-diagenesis seems to have occurred over an extended period of time, because although the specimen preserves all original soft-body parts, these occur as an amorphous mass owing to tissue decomposition. The occurrence of three-dimensional preservation suggests the absence of fossil-diagenetic compression; the sediments seem to preserve more-or-less their original thickness.  相似文献
3.
脊额瓢蜡蝉属分类研究(同翅目:蜡蝉总科:瓢蜡蝉科)   总被引:1,自引:0,他引:1  
综述了脊额瓢蜡蝉属的分类研究历史,记述中国脊额瓢蜡蝉属Gergithoides Schumacher 4个种,其中2个新种:Gergithoides undulatus Wang et CHe,sp.nov.和Gergithoides gibbosus Chou et Wang,sp.nov.,绘制了雄性外生殖器及外部形态主要特征图,并列有种的检索表。新种模式标本均保存在西北农林科技大学昆虫博物馆。  相似文献
4.
飞虱科三新属四新种 (同翅目:蜡蝉总科)   总被引:1,自引:1,他引:0  
记述飞虱科3新属,即奇臀飞虱属Miranus Chen et Ding,gen.nov.,东洋飞虱属Orientoya Chen et Ding,gen.nov.,和凹缘飞属属Aoyuanus Ding et Chen,gen.nov.,4新种为葛氏奇臀飞虱M.kuohi Chen et Li,sp.nov.、环鳞奇臀飞虱M.circus Chen et Ding,sp.nov.、东洋飞虱Orientoya orientalis Chen et Ding,sp.nov.和叉茎凹缘飞属Aoyuanus furcatus Ding et Chen,sp.nov.,及1新组合,片刺奇臀飞虱M.varians(Kuoh),comb.nov.。模式标本分别保存于贵州大学昆虫研究所(GZU)和南京农业大学植物保护系(NJAU)。  相似文献
5.
Ten new cavernicolous Fulgoroidea species of the families Cixiidae and Meenoplidae are described from the Canary Islands: Cixius palmeros, C. pinarcoladus, C. ratonicus, C. tacandus, Memoplus claustrophilus from La Palma, C. ariadne, C. nycticolus, M. charon from El Hierro, and Tachycixius crypticus, T. retrusus from Tenerife. Notes on their ecology and distribution are given, and where possible, phylogenetic affinities to existing epigean species of the corresponding families are discussed. Despite the present-day relict status of the majority of cavernicolous species, it cannot be concluded with certainty whether their evolution has followed allopatric or parapatric modes of speciation.  相似文献
6.
本文记述了作者采自云南省西双版纳勐养的袖蜡蝉科Derbidae国内一新记录属和一新种。模式标本保存在西北农业大学昆虫博物馆。 小袖蜡蝉属Rhotanella Fennah,中国新记录Rhotanella Fennah,1970,Nat.Hist.Rennell Isl.,6(64):67;Rhotanella,Zelazny,1981,Pacif.Ins., 23(3-4):275. 模式种:Rhotanella thy rssi Fennah,1970,Nat.Hist.Rennell Isl,6(64):68. 头顶背面狭三角形,顶和额相连呈圆形。额两侧脊在端部不分开,触角下突起和前胸背板在肩板复眼之间的短纵脊很发达。触角长略大于宽。喙短,不达到或刚达到后足基节。前翅宽,卵圆形,前缘有1个较长,2个中等长和2个较短的前缘室,第二、三  相似文献
7.
Delphacid relationships from the genus level to the subfamily have been completely resolved (among those taxa examined) using sequence data from the 3' end of the 12S gene. Monophyly of the non-asiracine subfamilies was strongly supported and the asiracine Ugyops was placed in the most basal position of the tree. Support levels for monophyly of the Delphacini increased after weighting transversions more heavily than transitions and after removing the cixiid outgroup from the dataset. Among the Delphacini, Conomelus and Megamelus were more closely related to each other than either was to Chloriona. These results are in agreement with the tree based on morphological characters. However, in contrast to morphological data our results strongly supported a sister group relationship between the Stenocraninae and the Kelisiinae. Although the 12S gene fragment gave some information about the species relationships within Chloriona, neither this fragment nor the 5' end of the 16S gene appear to be very useful for this level. Molecular evolutionary patterns provided evidence that there has been a shift in base composition from T to A during the early evolution of the non-Asiracinae. The non-Asiracinae also had comparatively fast substitution rates and these two observations are possibly correlated. In the ‘ modem' delphacid Chloriona, the AT content was comparatively low in regions free of constraints but this was not the case for ‘ non-modem' delphacids. The tRNA for valine has been translocated elsewhere, probably before the Delphacidae and Cixiidae diverged from each other.  相似文献
8.
对偏角飞虱属Neobelocera Ding et Yang的种类进行了系统整理,共4种,即偏角飞虱Neobelocera asymmetrica Ding et Yang(云南)、浙江偏角飞虱N.zhejiangensis(Zhu)(浙江、安徽)、汉阴偏角飞虱N.hanyinensis Qn etYuan(陕西)、兰坪偏角飞虱N.lanpingensis Chen(云南).对属征进行了拟定,编制了种检索表,简述了已知种的分布、寄主.描记了采自湖南张家界国家森林公园的1新种,即侧刺偏角飞虱N.laterospina sp.nov.,提供了该新种及兰坪偏角飞虱N.lanpingensis Chen的特征图.研究标本及新种模式标本保存于贵州大学昆虫研究所.  相似文献
9.
对我国长突飞虱亚科昆虫进行了系统整理,该亚科在中国迄今共记录了3个属:长头飞虱属Terauchiana Matsumura,1915(3种)、鞘茎飞虱属Preterkelisia Yang,1989(1种)和长突飞虱属Stenocranus Fieber,1866(20种).文中编制了分属分种检索表,记录了各属的主要特征、种类、分布及部分种类的寄主植物.记述采自我国贵州的长突飞虱属1新种,畸剌长突飞虱S.anomalus sp.nov.,绘制了新种的鉴别特征图.研究标本和模式标本保存在贵州大学昆虫研究所.  相似文献
10.
综述蒙瓢蜡蝉属的分类研究历史,记述中国蒙瓢蜡蝉属Mongoliana Distant 7种,其中包括5新种矛尖蒙瓢蜡蝉Mongoliana lanceolata, sp. nov.,三角蒙瓢蜡蝉Mongoliana triangularis, sp. nov.,锯缘蒙瓢蜡蝉Mongoliana serrata, sp. nov.,褐斑蒙瓢蜡蝉Mongoliana naevia, sp. nov. 和曲纹蒙瓢蜡蝉Mongoliana sinuata, sp. nov.;绘制了雄性外生殖器及前翅主要特征图,并列有分种检索表.新种模式标本均保存在西北农林科技大学昆虫博物馆.  相似文献
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