P. xylostella larvae and pupae were collected on Chinese kale (Brassica oleracea var. alboglabra) in the experimental field of Faculty of Agriculture, Rajamangala University of Technology Srivijaya during August 2013. They were reared in a colony in an insectary under conditions of 25 °C, 75±10% RH, and a photoperiod of 16: 8 h (L: D). The larvae were fed Chinese kale leaves and adults were fed a 10 % honey solution.