This paper reports the abundance of Asiatic corn borer, Ostrinia furnacalis Guenee, egg masses and parasitism by its
native egg parasitoid, Trichogramma papilionis Nagarkatti, in two vegetational regimes namely weedy (plot with natural
weed) and weed-free (plot without weed). The results showed that there was no significant difference in the total number of
egg masses laid in weedy and weed-free plot, however, the number of parasitized egg masses was significantly higher in the
weedy plot than the weed-free plot (72 and 50%, respectively).