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Biological control of Armyworm/Swarming caterpillar
Armyworms are held in check by egg and larval parasites. When these parasites fail, usually because of drought, armyworms become epidemic
1. Parasitoids such as Trichogrammatids, Scelionids, tachinids, ichneumonids, eulophids, chalcids, and braconid wasps parasitize this pest.
2. Ants, birds and toads feed on the pest. Fungal diseases and a nuclear polyhedrosis virus also infect the larvae.
Insect Pests of Rice by M. D. Pathak and Z. R. Khan