Pachycrepoideus vindemmiae (Hymenoptera: Pteromalidae) as a Potential Natural Enemy of Maize-Infesting Ulidiidae

摘要: Euxesta annonae Fabricius, E. eluta Loew, stigmatias and Chaetopsis massyla Walker (Diptera: Ulidiidae) are primary sweet corn pests in Florida. Few natural enemies of these flies known. The pupal parasitoid Pachycrepoideus vindemmiae Rondani (Hymenoptera: Pteromalidae) was discovered a laboratory colony stigmatias, its potential as biological control agent studied. Development times fresh, chilled, frozen pupae were recorded. Fly larvae allowed to dig into soil pupate, covered by 2.5 cm presented wasps determine if P. could locate them. Finally, evaluate susceptibility insecticides commercially used ear-stage corn, adult parasitoids caged on maize leaves treated with chlorpyrifos, methomyl, or zeta cypermethrin for 24 h. completed development normal, fly 15–17 days. None the parasitized. Chlorpyrifos methomyl residues killed >95% within Zeta slower acting, but resulted 50% mortality after Therefore, does not appear be well suited an effective maize-infesting Ulidiidae fields. This is first known account this cosmopolitan attacking ulidiids.