none Life cycle and development; Development; Evolution; Variation; Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Host parasite relationships; Abiotic factors; Physical factors; Light Insecta; Diapause; Parasitoids, characteristics, genetic variation & controlling factors; Genetic variation; Diapause characteristics, observations & use in biological control; Reaction of parasite to host; Host physiological status, effect on parasitoid diapause; Photoperiod; Temperature; Parasitoid diapause regulation, role Coleomegilla maculata (Coccinellidae); Hymenopteran parasites; Perilitus coccinellae; Parasitoid diapause characteristics & controlling factors Oulema melanopus (Criocerinae); Hymenopteran parasites; Tetrastichus julius; Parasitoid diapause characteristics & controlling factors; Reaction of parasite to host; Physiological status effect on parasitoid diapause Perilitus coccinellae (Braconidae); Life cycle; Phenological characteristics related to diapause, comparative study; Diapause; Characteristics & controlling factors in coleopteran host, review; Coleopteran hosts; Coleomegilla maculata; Parasitoid diapause characteristics & controlling factors; Reaction of parasite to host; Coleopteran host physiological status, effect on diapause; Photoperiod; Temperature; Diapause regulation in coleopteran host, role Tetrastichus julius (Eulophidae); Life cycle; Phenological characteristics related to diapause, comparative study; Diapause; Characteristics & controlling factors in coleopteran host, review; Coleopteran hosts; Oulema melanopus; Parasitoid diapause characteristics & controlling factors; Reaction of parasite to host; Coleopteran host physiological status, effect on diapause; Photoperiod; Temperature; Diapause regulation in coleopteran host, role