新疆寡索赤眼蜂属Oligosita Walker(膜翅目:赤眼蜂科)比较形态学研究  

Comparative Morphological Study on Genus Oligosita Walker( Hymenoptera: Trichogrammatidae) in Xinjiang

作　　者：尹弯 钟问 胡红英[1] YIN Wan ZHONG Wen HU Hong -yin g(College of Life Science and Technology,Xingjiang University,Urumqi 830046, Chin)

机构地区：[1]新疆大学生命科学与技术学院,乌鲁木齐830046

出　　处：《新疆农业科学》2017年第10期1893-1902,共10页Xinjiang Agricultural Sciences

基　　金：国家自然科学基金项目"新疆赤眼蜂科的系统分类与生物学研究"(31360523);"新疆盆地荒漠小蜂总科资源调查及区系分类研究"(U1170305)~~

摘　　要：【目的】通过比较形态学研究,解决寡索赤眼蜂属Oligosita Walker因个体微小,形态差异不明显而导致的鉴定困难问题,为寡索赤眼蜂属昆虫的鉴定提供可靠的形态依据,为利用该种寄生蜂防治农、林业害虫提供理论依据。【方法】对新疆分布的8个种的成虫制作玻片标本,挑选40个外部形态特征进行比较。【结果】筛选出以下18个具有严格种间特异性,可应用于分类学研究的特征:复眼颜色、单眼颜色、触角索节长宽比、触角索节形状、触角棒节长宽比、触角棒节形状、触角端棒节条形感受器的数量、前翅缘前脉着生刚毛数、前翅是否具前缘室、前翅缘前脉端部刚毛是否着生于前缘室、前缘室中着生刚毛数量、缘脉下方是否具纤毛、前翅长宽比、前翅缘毛相对长度、前翅端部形状、翅痣形状、后足胫节与产卵管长度比、雄性外生殖器有无内突。【结论】形态特征能有效应用于寡索赤眼蜂属的分类研究,且能有效区分之前被认为形态相似而难以区分的部分物种。[ Objective] Trichogramma wasps that belong to genus 0知osda are difficult to identify be-cause of not obvious morphological difference features, owing to their minute body size and varying but vague morphological characters between species. In this study, we attempt to solve this problem by comparative mor-phological research, and to obtain reliable morphological features for accurate identification of Oligosita wasps, which could be utilized to control many significant pests as natural enemies.[ Method] Eight species of 0知〇5- ita wasps in Xinjiang were mounted on glass microscope slides for observation, after which 40 morphological characters were selected for interspecific comparison.[ Result] Eighteen characters with strict interspecies spe-cificity were capable to be applied to taxonomic studies, including colour of compound eyes, colour of ocellus, the length - width ratio of funicle, the shape of funicle, the length - width ratio and the shape of club, the shape of club, the number of placoid sensilla on third segment of club, the number of seta on premarginal vein , the presence/absence costal cell, the presence/absence of seta in costal cell, the number of seta in cos-tal cell, presence/absence of microtrichia seta blow marginal vein, the length - width ratio of forewing, the radio of fringe length of forewing to forewing width, the shape of stigma, the shape of the front margin of apical of forewing, the length radio of hind tibia to ovipositor, the presence/absence of apodemes on male genitalia.[Conclusion ] The morphological characters mentioned above could be used in taxonomic study of genus Oligosita, especially in identification of some morphologically similar species.

关 键 词：新疆寡索赤眼蜂属 赤眼蜂科 比较形态学 物种鉴定 

分 类 号：Q964[生物学—昆虫学]