In a study of the antibiosis effect of 10 cowpea cultivars on the development, fecundity and longevity ofClavigralla tomentosicollisthree, TVu 3198, TVu 3354 and TVu 8525, increased significantly the nymphal developmental period of the bug and caused higher nymphal mortality than the susceptible check. TVu 3372 and TVu 3355 increased the period of nymphal development and TVu 3199 caused higher nymphal mortality than the check. Fecundity of mated females was lowered by TVu 3355, TVu 3354, TVu 8525 and TVu 3364. None of the test cultivars had a significant effect on the longevity of mated females