بررسي هاي مرفولوژيك و بيولوژيك زنبور پارازيتوييد COTESIA RUFRICUS )HALIDAY( پارازيتوييد داخلي تجملي لاروشب پره قك نقطه اي برنج

Morphological and biological studies of parasitoid wasp, Cotesia rufricus (Haliday) (Hymenoptea: Braconidae), a gregarious endoparasitoid of the rice armyworm larvae, Mythimna unipuncta

Braconid Cotesia rufricus (Haliday) wasp is a gregarious endoparasitoid of lepidopterous larvae that attack rice armyworm larvae, M. unipuncta and some other noctuid species. This parasitoid was reported for first time by author as a natural control agent in the rice fields of western Mazandaran. Morphological studies showed that characteristics of this species is similar to exotic species which is also scientifically named Apanteles rufricus in the references. Biological studies showed that C. rufricus female wasp usually lay its eggs into young larval instars (first instar to third instar) of rice armyworm. After 3 to 4 days they hatched. Larvae usually feed 8-12 days from the host body contents and after full development, they emerged from the host and immediately made their pupal cocoons. After 5-10 days adult parasitoid emerged from the top of the cocoon.