Long-distance migration e a seasonal movement (to and fro) of insect populations between regions where conditions are alternately favorable or unfavorable (including one region in which
breeding occurs), plays a key role in the life-history of many insect species and is an important reason of outbreaks of crop pests
(Dingle and Drake, 2007). P. xylostella is highly migratory in nature and the seasonal movements of this species have been well documented (Chapman et al., 2002; Feng et al., 2011).