草地贪夜蛾两种重要卵寄生蜂的鉴别及寄生行为

草地贪夜蛾Spodoptera frugiperda(J.E.Smith)是世界重要农业害虫,具有很强的迁飞性,对玉米等禾本科植物造成危害。调查草地贪夜蛾卵寄生性天敌资源,明确其种类和鉴别特征,对筛选优势天敌种类和开展生物防治具有重要意义。对福建省寄生性天敌资源调查结果表明,福建省有两种草地贪夜蛾卵寄生蜂,分别为夜蛾黑卵蜂Telenomus remus Nixon和螟黄赤眼蜂Trichogramma chilonis Ishii,本文记述了这两种卵寄生蜂的主要形态特征,并观察了其寄生行为。

Identification of two parasitoid wasps of Spodoptera frugiperda egg and their parasitic behavior

The fall armyworm, Spodoptera frugiperda, is one of the most important agricultural pests in the world. It has strong immigrating ability and causes harm to corn and Gramineae plants. Therefore, it is of great importance to further surveys and identification on parasitoid wasps of S. frugiperda egg for selection of superior natural enemies and field application. Through field surveys, two species of egg parasitoid wasps, Telenomus remus Nixon and Trichogramma chilonis Ishii were collected in Fujian province. The morphological characteristics and occurrence of parasitoid wasps were briefly recorded with the photographs of parasitoid wasps, and the parasitic behavior was also studied.