none Allorhogas sp. a gregarious ectoparasite was introduced for trials against graminaceous stem borers in India and a mass rearing technique developed for the same. The rearing cage was a modified 20 times 16 cm clear plastic jar and Chilo partellus (Swinh) larvae were exposed for parasitisation inside drinking paper straws. By releasing 84 females into the cage it was possible to rear 1229 cocoons in 5 exposures of 28 larvae each within 10 days. Allorhogas sp. was also found capable of parasitising C. auricilius (Dudg.), C. infuscatellus Snell, C. sacchariphagus indicus Kapur, Acigona steniella (Hamps.), Scirpophaga incertulas (Wlk.), Sesamia inferens (Wlk) and Corcyra cephalonica (Staint.)