The influence of two photoperiods (14L:10D and 24L:0D) and four wavelengths of light [white (control), blue (c. 475 ran), yellow (c. 570 nm) and red (c. 650nm)] on development and reproduction of the ladybird, Propylea dissecta (Mulsant), was investigated. The photoperiod of 14L:10D and the white-light wavelength recorded fastest development, maximum survival and reproduction. The developmental and reproductive Performance decreased in the order white > yellow > blue > red. The effect of the wavelength is probably due to the differential predatory response under different coloured arenas.