黑缘烟蟋螽丝腺结构

【目的】蟋螽是直翅目中唯一具有吐丝筑巢行为的类群。本研究旨在探讨蟋螽丝腺的结构特点。【方法】应用解剖学观察、免疫荧光、苏木精-伊红染色、PAS苏木精染色、扫描电镜和透射电镜等方法从细胞水平对黑缘烟蟋螽Capnogryllacris nigromarginata丝腺的显微与超微结构进行了观察。【结果】黑缘烟蟋螽丝腺由导管和腺泡构成。腺泡由鞘细胞延伸形成的结缔组织鞘包围。腺泡的主体有4种细胞,分别为Ⅰ型分泌细胞、Ⅱ型分泌细胞、围细胞和腔细胞。Ⅰ型和Ⅱ型分泌细胞为大的腺细胞,形状不规则。分泌细胞细胞核很大,胞质内有大量的内质网和分泌颗粒。Ⅰ型分泌细胞靠近腺泡中心,PAS-苏木精染色表明Ⅰ型分泌细胞内含糖蛋白,Ⅱ型分泌细胞在腺泡外周,位于Ⅰ型分泌细胞与围细胞或结缔组织鞘之间。腔细胞分散在分泌细胞之间,包围形成胞外运输分泌物的通道。围细胞与鞘细胞接触,具有由细胞膜内陷形成的微绒毛腔,胞质内有大量的线粒体。围细胞微绒毛腔与腔细胞包围的细胞外运输通道相连,分泌细胞分泌的颗粒聚集在分泌细胞和胞外运输通道之间的连接处,并将分泌物排出至胞外运输通道。多个腺泡的胞外运输通道汇集到由单层细胞组成的丝腺导管。单层导管细胞靠近管腔外围具有规则排列的质膜内陷和大量伸长的线粒体;靠近管腔的一侧具连续的细胞膜突起,在导管壁的表皮下紧密排列。【结论】黑缘烟蟋螽丝腺分泌细胞分为Ⅰ型分泌细胞和Ⅱ型分泌细胞。分泌物质产生及分泌过程依次经过分泌细胞、腔细胞包围的胞外通道、分支导管、总导管和唾窦。其中在腺泡细胞之间,分泌物向外运输过程中,围细胞微绒毛腔的微丝束可能对分泌物的外排提供推动力。     

Two new species of Neoperla (Plecoptera,Perlidae) from Dabie Mountains of China

Two new species of the stonefly genus Neoperla, N. nigromarginata sp. n. and N. similiflavescens sp. n., are described from Dabie Mountains of Central China in the Liankangshan National Nature Reserve. The new species are compared with related congeners.     

河南新(虫责)属(襀翅目,(虫责)科)一新种记述

记述采自河南的1新种,河南新Neoperla henana sp.nov.,并讨论了其与近似种的区别。模式标本保存在河南科技学院标本馆。河南新,新种Neoperla henana sp.nov.(图1～5)新种腹部第7背板隆突和第8背板的骨化突特征与师周新Neoperla magisterchoui Du,2000近似。二者的主要区别在于:新种雄虫阳茎囊略长于阳茎管,阳茎管端部有1对膜质突起。而师周新雄虫阳茎囊长度约为阳茎管的两倍,阳茎管端部有两对膜质突起。正模♂,河南南阳老界岭,2008-07-02,李卫海采,副模1♂,同正模。词源:新种以标本的模式产地命名。     

Addition of Ptyas nigromarginata （Blyth, 1854） （Squamata： Colubridae） to the Snake Fauna of Thailand with Preliminary Remarks on Its Distribution

The first record of Ptyas nigromarginata(Blyth,1854) from Thailand and a new record from China are reported.Literature and internet sources were searched for previous records of this species to establish its geographic and altitudinal distributions in Asia.The distribution in India was adapted to the new state division of the northern part of the country.The results show that the species almost exclusively occurs in hill evergreen and montane forests of the Himalayan foothills and mountain ranges continuous with it,at altitudes of 1000–2300 m above sea level.     

中国新(帻)属(襀翅目,(帻)科)一新种记述

记述采自台湾1新种,赛氏新(赜)Neoperla siveci sp.nov.,并讨论了其与近似种的区别.模式标本保存分别在中国农业大学昆虫博物馆和河南科技学院标本馆.赛氏新(帻),新种Neoperla siveci sp.nov.(图1～4)新种腹部第7背板隆突和第8背板的骨化突特征与邵氏新(赜)Neoperla sauteri Klapalek,1912非常近似.二者的主要区别在于:新种雄虫阳茎囊非常短,约为阳茎管的1/5,阳茎囊腹面刺较少,顶端略直;而邵氏新(赜)雄虫阳茎囊长度略短于阳茎管,阳茎管囊腹面刺较多,端部呈钩状.正模♂,台湾屏东石门村,2010-11-08,杨定采.副模1 ♂,同正模.词源:新种种名源自襀翅学家Ignac Sivce博士的姓氏.     

New species and records of the stonefly genus Neoperla (Plecoptera,Perlidae) from Jinhuacha Nature Reserve,Guangxi of China

Two new Neoperla species (Neoperla mesospina, Neoperla latispina) are described from the adult male stage from the Jinhuacha Nature Reserve, Guangxi of China. The new species are compared with similar taxa. Taxonomic remarks are also provided for N. transversprojecta Du & Sivec and N. yao Stark. The latter species is newly recorded for Guangxi.     

贵州新虫责属二新种记述1(襀翅目:虫责科:虫责亚科)

记述采自中国贵州的新虫责属 2新种 ,即双瘤新虫责 Neoperla bituberculata,sp.nov.和曲囊新虫责 N eoperla flexiscrotata,sp.nov.。模式标本存扬州大学植物保护系昆虫标本室 ( YU)