SURVIVAL OF DIPTERAN PARASITOIDS (DIPTERA, TACHINIDAE) DURING A VIRUS-INDUCED GYPSY-MOTH POPULATION COLLAPSE

A population of gypsy moth, Lymantria dispar (L.), in Garrett County, Maryland was examined for parasitoids and infection of Lymantria dispa r nucleopolyhedrosis virus (LdMNPV). Total parasitism was 19.5% and 22 .8% for two cohorts of gypsy moth and over 70% of the parasitized larv ae were also infected with virus. Compsilura concinnata (Meigen) was t he most common of three tachinid species recovered. The tachinid paras itoids appear to be at least tolerant of virus infection in the host; however, their development may be influenced by a stressed host.