Division of Entomology, I.A.R.I., New Delhi-110 012.
* Present Address:: Scientist S-l, Division of Entomology, C.P.R,I. Shimla-171 001.
The toxicity of menazon to mustard aphid, Lipaphis erysimi and its predator Coccinella septempunctata has been studied under laboratory conditions. The pesticide showed a differential level of toxicity. It was 287.5 times more toxic to Lipaphis erysimi as compared to Coccinella septempunctata.