Subject: Green insect
Location: New Jersey
July 4, 2016 5:15 am
I have some type of insect nesting in my house window tracks. Have been seeing them for four years. This is the first time we have seen the actual insect.
While you are correct that this is a nest, the green insects, which are immature Orthopterans, are not constructing the nest. This nest was constructed by a Grass Carrying Wasp in the genus Isodontia, and the female has provisioned the nest with paralyzed Orthopterans, generally Crickets and Katydids, that serve as a fresh food supply for her developing larva which is visible on the far right of your image. It is a whitish-gray grublike creature. We frequently receive reports of Grass Carrying Wasps nesting in window tracks.
Thank you! How interesting! I do not know much about the Wasp at all. Is it OK to leave them to keep nesting in the track or will they somehow harm the window/house? I love your website and rely on it frequently for insect identification. Thanks for your quick response.