Abstract

Laboratory susceptibility tests with various insecticides against houseflies(Musca domestica L.) were simultaneously conducted with larvae. As a result of these experment the following conclusion has been obtained. 1. The relalive ratio to various insecticidal effects were naled > DDVP > diazinon > gamma-BHC > malathion > dieldrin > DDT in houseflies larvae. 2. It was noted that resistance to various insecticides is larvae was in proportion to resistance in adults.