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首页> 外文期刊>Proceedings of the Entomological Society of Washington >Ultrastructure of the chorion of Dioctria flavipennis Meigen, 1820 (Diptera : Asilidae : Stenopogoninae) compared with those of fourteen asilid species from the mid-Atlantic region of North America
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Ultrastructure of the chorion of Dioctria flavipennis Meigen, 1820 (Diptera : Asilidae : Stenopogoninae) compared with those of fourteen asilid species from the mid-Atlantic region of North America

机译：与北美北大西洋中部地区的14种小种相比，1820年的Dioctria flavipennis Meigen（双翅目：sil科：Stenopogoninae）绒毛的超微结构

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摘要

The fine structure of egg morphology of Dioctria flavipennis Meigen 1820 was studied utilizing both scanning electron (SEM) and transmission (TEM) microscopy. Eggs from Aksaray, Turkey, averaged 0.4 mm in length and 0.3 mm in width and had a single micropylar opening at one end. Chorions were covered with small and large circular elevated structures. A micropylar region eclosion groove is reported for the first time. Sperm flagella were present in the micropylar region of some eggs. The endochorion and exochorion were distinguished from each other in TEM micrographs, the former being slighter more dense than the latter. Lamellar sheets, minute canals, and air ducts were also found. Additionally, the exochorion of the egg of D. flavipennis Was compared with those (SEMs) of 14 asilid species from the mid-Atlantic region of North America: Atomosia pitella (Wiedemann), Cerotainia albipilosa Curran, Eudioctria tibialis (Banks), Holcocephala abdoininalis (Say), H. calva (Loew), Laphria divisor (Banks), L. flavicollis Say, L. ithypgi McAtee, L. sicula McAtee, L. virginica (Banks), Leptogaster flavipes Loew, Psilonyx annulatus (Say), Tipulogaster glabrata (Wiedemann), and Tolmerus sp. Brief comments about the phylogeny of the egg chorion and its adaptation to various enviromental conditions are included. Egg morphology may be useful to elucidate taxonomic and phylogenetic relationships among asilids.
机译：利用扫描电子显微镜（SEM）和透射电子显微镜（TEM）研究了Dioctria flavipennis Meigen 1820卵形的精细结构。来自土耳其阿克萨赖邦的鸡蛋平均长0.4毫米，宽0.3毫米，一端有一个小孔。猎物被大小圆形的高架结构所覆盖。首次报道了一个小孔区域的封闭沟。某些卵的毛孔区域存在精子鞭毛。内镜和外镜在TEM显微照片上是相互区分的，前者比后者略密一些。还发现了层状薄板，小运河和风道。此外，还比较了D. flavipennis卵的外传体与来自北美中大西洋地区的14种asilid物种的卵外传体（SEM）的比较：皮毛虫（Wiedemann），白蜡虫（Cerotainia albipilosa Curran），tieudicria tibialis（Banks），白头Hol（Holcocephala abdoininalis） （Say），H。calva（Loew），Laphria除数（Banks），L。flavicollis Say，L。ithypgi McAtee，L。sicula McAtee，L。virginica（Banks），Leptogaster flavipes Loew，Psilonyx annulatus（Say），Tipuloglogaster glabrata（Wiedemann）和Tolmerus sp。简要介绍了卵绒毛囊的系统发育及其对各种环境条件的适应性。卵的形态可能有助于阐明个体之间的分类学和系统发育关系。

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