none Reproduction; Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Host parasite relationships; Ecology; Population dynamics; Population structure Nephantis serinopa (Oecophoridae); Hymenopteran parasites; Bracon brevicornis; Parasite density dependent population regulation Bracon brevicornis (Braconidae); Reproductive productivity; Lepidopteran hosts; Nephantis serinopa; Population regulating factors; Prevalence; Parasite parasite relationships; Population regulation in Nephantis serinopa (Lepidoptera); Population density; Regulating effect on populations in lepidopteran hosts; Population regulation; Density, effect on progeny production & sex ratio in lepidopteran hosts; Population sex ratio; Biotic regulation in lepidopteran hosts