Bionomics of the Juniper Webworm
Date createdMarch 1969
AbstractDichomeris marginella (Denis & Schifferrniiller) causes damage in central Illinois principally to Irish juniper by webbing and feeding on the foliage. The insect overwinters as a partially grown larva. The larva resumes feeding in the spring and reaches maturity by mid-May. The pupal stage lasts about 2 weeks. Moth emergence reached a peak in mid-June of 1966 and 1967. Males are strongly attracted by females during the mating period. Apanteles sp., a larval parasite, and Itoplectis conquisitor (Say), a larval-pupal parasite, jointly reduced the juniper webworm population by approximately 10% in the field in 1967.
Volume, Issue, Page Number62, 2, 287-292
Spatial CoverageCentral Illinois