薇甘菊上新发现的一种天敌——亚铜平龟蝽

A new natural enemy--Brachyplatys subaeneus found on Mikania micrantha

亚铜平龟蝽Brachyplatys subaeneus(Westwood,1837)是在广州的外来入侵杂草薇甘菊Mikania micrantha上新发现的一种天敌。本文给出了亚铜平龟蝽雌雄外部形态,以及雄性抱握器形态、着生位置、阳茎等详细解剖结构。为更进一步确定形态鉴定结果,扩增了其线粒体16S rDNA和COI基因片段并测序,将测序结果与GenBank中的序列进行比对,用MEGA 5.0构建系统进化树,用分子生物学方法进一步确认了形态学鉴定结果。此外,就亚铜平龟蝽在控制薇甘菊上的潜在价值进行了初步的比较分析。

Brachyplatys subaeneus(Westwood,1837)is a natural enemy discovered on the invasive weeds Mikania micrantha in Guangzhou nearly.In this paper,the external morphology of the male and female,as well as the morphology of male genitalia,the morphology and position of clasper,and the structure of aedeagus are detailed.In order to further confirm the morphological identification results,the 16S rDNA and COI gene fragments of its mitochondria were amplified and sequenced.The sequencing results were compared with the sequences in GenBank.The phylogenetic tree was constructed with MEGA 5.0 and further confirmed morphological identification results by molecular biology methods.Furthermore,a preliminary comparative analysis was conducted on the potential value of B.subaeneus to control Mikania micrantha.