To test various mesh types and sizes for use in augmentoria for biological control of olive fruit flies (Bactrocera oleae), researchers placed infested olives in “mini-augmentoria” in a lab. Each mini-augmentorium was contained in a larger box, and the number of fruit flies and parasitoids that were either trapped inside the augmentorium or escaped into the larger container were counted at the end of the experiement period. (Image orginally published in Desurmont et al 2022, Journal of Insect Science)