Abstract
Heliothis peltigera (Schiff.) (Noctuidae) was found infesting the weedAcanthospermum hispidum at Anand (Gujarat State), and our observations indicated a close synchrony between the seasonal history ofA. hispidum andH. peltigera. Both appear with the onset of monsoon (July) and disappear as winter approaches (October/November).H. peltigera larvae were observed to feed primarily on the growing tips and terminal leaves, the young larvae forming characteristic leaf-webs. The extent of damage, population of the insect and its natural parasitism were recorded. Peak period of larval activity was in September when up to 53.3% shoots were damaged and 35 larvae/100 shoots were encountered.
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