Leucopis sp. silver fly
Certain species in the silver fly genus Leucopis (adult shown here) are promising biological control agents for the forest pest hemlock woolly adelgid (Adelges tsugae). (Photo by Bryan Mudder, USDA Forest Service)
Certain species in the silver fly genus Leucopis (adult shown here) are promising biological control agents for the forest pest hemlock woolly adelgid (Adelges tsugae). (Photo by Bryan Mudder, USDA Forest Service)