Five cowpea cultivars were evaluated to clear the reflex of their characteristics to the infestation caused by the main sucking pests, Whitefly, Thrips, Jassids, Aphids, and Spider mite in northern upper Egypt at Assiut governorate during the two successive seasons of 2001 and 2002.Results revealed that the highest pests' density were recorded on Tvu-21 cultivar.However, the lowest density were th...