The ichneumonid parasites associated with the gypsy moth (Lymantria dispar).
A detailed account is given of studies to establish the identities of the varius ichneumonids that have been recorded as parasites of Lymantria dispar (L.); more than 100 species have been recorded as primary parasites and almost 25 as hyperparasites. As a result of the investigations, 24 ichneumonid species were confirmed as parasites of this pest, 31 species were shown not to be associated with it, and 38 species remain as unconfirmed records. Two new species are described: Phobocampe lymantriae sp.n., which was reared from L. dispar collected in Europe, Japan and China, and Theronia atalantae himalayensis subsp. n., reared from L. obfuscata Wlk. in India. The hyperparasitic species recorded in the literature are listed; they were not studied.