Biology of Amblyseius iongispinosus (Evans) and its feeding efficiency has been reponed on tetranychid mites (Mallik. 1974; Mallik and ChannaBasavanna 1983). However, information on its biology and feeding potential on chilli mite, Polyphagotarsonemus latus (Banks) is not available, and so experiments were conducted under laboratory conditions to study these parameters.