ARTI PRASAD AND ASHOK KUMAR*

Mosquitoes are a source of great trouble to human beings and create a danger to public health, as vectors of diseases. Recently to manage vectors a biological control agent, bacteria has proved predictable insecticides, our present study was conducted to evaluate the mosquito larvicidal activity of Streptomyces indiaensis against dengue mosquito (L) as per the method recommended by World Health Organization ( WHO, 2005). In the study highest larval per cent mortality was recorded at 3.5x14x10 cfu/ml concentration as 94.44%. The Medan lethal concentration LC value for the third instar larvae of Aedes aegypti (L.) was 1.979 cfu/ml and LC value was 3.561cfu/ml. at 48 h of exposure time.