中国新纪录属黄伊克跳小蜂属及一中国新纪录种记述(膜翅目:跳小蜂科)  

First record of genus Xanthoectroma from China with description of a new record species (Hymenoptera: Encyrtidae)

作　　者：罗顺刚 康宁 胡红英 LUO Shun-gang;KANG Ning;HU Hong-ying(Key Laboratory of Biological Resources Genetic Engineering/College of Life Science and Technology,Xinjiang University,Urumqi 830046,China)

机构地区：[1]新疆大学生命科学与技术学院/新疆生物资源基因工程重点实验室,乌鲁木齐830046

出　　处：《西南农业学报》2022年第12期2906-2911,共6页Southwest China Journal of Agricultural Sciences

基　　金：国家自然科学基金项目(31860612)。

摘　　要：【目的】记述中国新纪录属黄伊克跳小蜂属(Xanthoectroma)中的一新纪录种——西班牙黄伊克跳小蜂(Xanthoectroma aquilinum Mercet, 1925),提供该种的DNA条形码信息,既为开展该新纪录种的生物学、生态学、分子生物学研究提供参考,同时丰富跳小蜂科的物种信息。【方法】对网扫标本进行挑拣,并在数码体视显微镜下进行形态特征观察和数据测量;利用无损伤提取法提取基因组DNA,用通用引物扩增西班牙黄伊克跳小蜂(X.aquilinum)的线粒体基因(Cytochrome Oxidase I, COI),将其序列作为该种的DNA条形码。【结果】该新纪录种雌性主要特征为整体呈黄色,具明显的盾纵沟;翅端部略超过腹部的1/2,后缘脉与缘脉等长,腹部明显长于头胸之和。雄性主要特征为体长明显短于雌性,头顶部为棕色,胸部背面为深棕色,腹部末端具明显的三角状黑棕色斑点。提供了该新纪录种的彩色整体图和局部鉴定特征图以及COI基因序列,通过构建系统发育树发现其与长索跳小蜂属(Anagyrus)的和班氏跳小蜂属(Aenasius)亲缘关系最近。【结论】本次发现的中国新纪录种为西班牙黄伊克跳小蜂(X.aquilinum Mercet, 1925),并上传其COI基因序列至NCBI。【Objective】A new record species of the genus Xanthoectroma from China—Xanthoectroma aquilinum Mercet 1925 is described detailly, and the DNA bar code information of this species is also provided, which is a reference for the study of biology, ecology and molecular biology of this new record species, and also to enrich the data of the Encyrtidae.【Method】 The net-sweeped specimens were sorted, the morphological characteristics were observed and measured under a digital stereo microscope;Genomic DNA was extracted using non-damage extraction method, and the mitochondria Cytochrome Oxidase I(COI) gene of X.aquilinum was amplified with universal primers. 【Result】The main identification characteristics of female specimens were whole body yellow and with obvious sulcus;The tip of the wing was slightly more than 1/2 of the abdomen, the postmarginal vein was the same length as the marginal vein, and the abdomen was significantly longer than the sum of the head and thorax. The main identification characteristics of male specimens were that the body length was significantly shorter than that of females, the top of the head was brown, the back of the thorax was dark brown, and the end of the abdomen has obvious triangular black-brown spots. The identification characteristic figures of the new record species, as well as the COI genetic sequence, were provided, the phylogenetic tree showed that it was more closely related to Anagyrus and Aenasius.【Conclusion】The new record species is X.aquilinum Mercet 1925,upload the COI gene sequence to NCBI.

关 键 词：小蜂总科 黄伊克跳小蜂属 COI序列 新纪录 物种鉴定 

分 类 号：Q969.54[生物学—昆虫学]