none A field test was conducted in August 1984 to determine the effects of thiodicarb (Larvin)), fenvalerate (Pydrin)), and flucythrinate (Pay-off)) residues on adult survival of Microplitis croceipes (Cresson) (Hymenoptera: Braconidae), a common parasitoid of Heliothis spp. (Lepidoptera: Noctuidae) larvae. Preliminary topical tests demonstrated that these three insecticides were relatively non-toxic to adult M. croceipes .