Resistência de genótipos de feijão-caupi ao ataque de Callosobruchus maculatus (Fabr., 1775) (Coleoptera: Chrysomelidae: Bruchinae)

The objective of this study was to evaluate the resistance of 4 genotypes of cowpea (Vigna unguiculata) to the bean weevil Callosobruchus maculatus (Fabr., 1775). The genotypes evaluated were BR 17-Gurgueia, BRS Rouxinol, TE96-290-12G and BRS Guariba. Tests were conducted with and without possibility of choice, in a completely randomized design, totaling 4 treatments each with 5 replicates, evaluating the number of eggs, number of emerged insects, egg viability (%) and instantaneous rate of population growth. In the test with possibility of choice the genotype TE96-290-12G was revealed as the most resistant. BRS Rouxinol was the most susceptible genotype.