The phorid fly Megaselia scalaris (Loew) (Diptera: Phoridae) is an omnivorous species, capable of exploring a large variety of environments and ecological niches. It is known as an important detritivore species with maggots feeding on a variety of food of both animal and plant origin. The present study reports M. scalaris as an endoparasitoid attacking colonies of the southern green stink bug Nezara viridula (L.) for the first time. This case of parasitism was observed inside rearing cages of N. viridula at the Plant Protection Research Institute, Dokki, Egypt in August 2020. We firstly identified adult individuals of M. scalaris which were found moving erratically within the cages using relevant identification keys. To verify that N. viridula individuals are parasitized by the same parasitoid and they are not infected with other parasitoids, some of the parasitized bugs were transferred to a separate cage at the same laboratory conditions and the developmental stages of the dipteran parasitoid were observed until the adult emergence. The present investigation revealed that M. scalaris could be included to the recorded parasitoid species of N. viridula, and further studies should be carried out to assess the efficacy of this fly as a biocontrol agent.

中文翻译：

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的第一检测Megaselia scalaris（勒夫）（双翅目：蚤蝇），作为兼性内寄生蜂稻绿蝽（L.）（半翅目：蝽科）

拟蝇Megaselia scalaris（Loew）（Diptera：Phoridae）是杂食性物种，能够探索各种环境和生态位。它被认为是重要的有害物种，以各种动植物来源的食物为食。本研究首次报道了标尺分枝杆菌作为一种内寄生物攻击南方绿色臭虫内扎拉绿毛虫（L.）的菌落。于2020年8月在埃及Dokki植物保护研究所的绿唇猪笼草饲养笼中观察到这种寄生虫病例。我们首先使用相关的识别码识别了鳞翅藻的成年个体，发现它们在笼中呈不规则运动。为了验证绿尾猪笼草个体被相同的寄生虫寄生，并且没有感染其他寄生虫，在相同的实验室条件下，将一些被寄生的虫子转移到了一个单独的笼子中，并观察到二倍体寄生性寄生虫的发育阶段，直到成虫出现。目前的调查表明，标尺分枝杆菌可能被包括在已记录的长吻猪笼草的寄生虫物种中，应进行进一步的研究以评估这种蝇作为生物防治剂的功效。