Abstract
Severe outbreak of rice green semilooper Naranga aenescens Moore (Lepidoptera: Noctuidae: Eustrotiinae) in West Bengal, India is documented along with the first record of its primary parasitoid Cotesia ruficrus (Haliday) (Hymenoptera: Braconidae: Microgastrinae). Simultaneously two hyperparasitoids viz., Trichomalopsis apanteloctena (Crawford) (Pteromalidae) and Mesochorus sp. (Ichneumonidae) were also recorded. The population of rice green semilooper varied from 3.20 to 5.45 larvae per hill with the peak in the first fortnight of August, 2015. Percent parasitism of the larvae was as high as 94.00% recorded in the first fortnight of August with 77.50% as the mean.
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