ABSTRACT: Glyptapanteles aristolochiae (Wilkinson) comb. nov. is reassigned and notes on host-parasitoid interactions are provided. The extended host range of the genus Glyptapanteles includes four families— Papilionidae, Nymphalidae, Arctiidae and Noctuidae from India. Five braconid parasitoids viz., Glyptapanteles aristolochiae (Wilkinson) comb, nov., Apanteles folia Nixon, Apanteles javensis Rohwer, Apanteles phycodis Viereck and Apanteles machaeralis Wilkinson are documented with diagnostic details including illustrations of various life stages of the unparasitized host. Spindasis vulcanus (Fabricius) (Lepidoptera: Lycaenidae), a solitary endoparasitoid, is reported for the first time as a host of A. folia. Both wasps, G. aristolochiae parasitizing larva of Pachliopta hector (Linnaeus) (Lepidoptera: Papilionidae) and A. javensis parasitic on larva of Pelopidas conjuncta (Herrich-Schaffer) (Lepidoptera: Hesperiidae), exhibit a gregarious habit. For all the species, information on parasitoid distributio...