Species Exorista larvarum

Musca larvarum Linnaeus, 1758

Lepidoptera larvae, mainly Lymantriidae and Lasiocampidae. It attacks the Spongy Moth (Lymantria dispar) and Lymantria monacha L. Used as biocontrol

A European species introduced into New England and now widespread in Canada as well. The key to central European Tachinidae lists habitat, habits, and hosts: "Open countryside, thin deciduous woodland, orchards, Pine forest. Mid May to End September, especially End July to Early September, at least 2 generations. Usually on flowers; not rare, easier to rear from the host than to catch in open areas. Numerous Lymantriidae, Lasiocampidae, Noctuidae, Arctiidae and Zygaenidae, rare on Sphingidae, Nymphalidae, Pieridae, Notodontidae, Geometridae and Endromididae."(1)

EoL