none Studies made on the occurrence and natural enemies of potato cutworms at Simla, Jullundhur, Patna and Rasalpur (Karnataka) showed that Agrotis ipsilon (Hfn.) was a serious pest of potato only in Patna and Jullundhur, A. segetum (D & S) on Simla hills, A. spinifera Hb. in Rasalpur, A. flammatra Fabr. in Patna and Xestia c-nigrum (L.) on Simla hills. Five parasitoids viz, Macrocentrus collaris (Spin.), Netelia ocellaris (Thomson) sp. complex, Coelichneumon sp.nr. truncatulus Thomson, Periscepsia carbonaria Panzer and Turanogonia chinensis Wiedemann, a digger wasp, Ammophila sp. and an entomogenous fungus, Metarrhizium anisoplae (Metch.). Nutrition; Diet; Parasites diseases and disorders; Parasites; Helminth parasites; Insect parasites; Hosts; Insect hosts; Host parasite relationships; Diseases and disorders; Diseases; Microbial diseases; Ecology; Community structure; Land and freshwater zones; Oriental region Neoaplectana (Nematoda ); Tachinidae; Lepidopteran hosts; Agrotis & Xestia c nigrum; Prevalence & host records; Prevalence; Agrotis & Xestia c nigrum (Lepidoptera); India; Prevalence & lepidopteran host records Agrotis (Noctuidae); Food plants; Solanum tuberosum (potato); Relative abundance in crops; Nematode parasites; Neoaplectana; Dipteran parasites; Tachinidae; Prevalence & host records; Hymenopteran parasites; Braconidae & Ichneumonidae; Prevalence & host records including 2 new records; Prevalence; Diptera; Hymenoptera & Nematoda; Fungal diseases; Metarrhizium anisoplae; Records; Relative abundance; Crops; India; Relative abundance on food plant, occurrence of parasites & fungal disease Xestia c nigrum (Noctuidae); Food plants; Solanum tuberosum (potato); Relative abundance in crops; Nematode parasites; Neoaplectana; Dipteran parasites; Tachinidae; Prevalence & host records; Prevalence; Diptera; Hymenoptera & Nematoda; Relative abundance; Crops; India; Relative abundance on food plant, occurrence of parasites & fungal disease Macrocentrus collans (Braconidae); Prevalence; Agrotis (Lepidoptera) host; India Macrocentrus collaris (Braconidae); Lepidopteran hosts; Agrotis; Prevalence & host records; India; Prevalence & lepidopteran host records Ichneumonidae; Lepidopteran hosts; Agrotis; Prevalence & host records; Prevalence; Agrotis (Lepidoptera) host; India; Prevalence & lepidopteran host records