none The performance of a Mexican parasitoid, Allorhogas pyralophagus (Marsh) (Hymenoptera: Braconidae) was studied in the laboratory on five different host insects. The per cent parasitism obtained on three pyralids, Chilo portellus (Swinh), C. infuscatellus Snell., C. auricilius (Dudg.) and a noctuid Sesamia inferens (Wlk.) were statistically similar while significant reduction in per cent parasitism was observed on Corcyra cephalonica (Staint.) (Lepidoptera: Galleridae). Among the four well preferred hosts, C. partellus was observed to be most suitable for rearing A. pyralophagus, as developmental time of the parasitoid was minimum and longevity and fecundity were maximum when reared on this host insect.