Thirty-six lines of Asiatic cotton were screened for resistance to bollworm, Heliothis zea, using a nochoice, square feeding assay. The Asiatic cottons, Gossypium arboreum and G. herbaceum, represent a diverse genetic resource which has shown resistance to a number of insect pests. Recently developed in ovulo methods have been used to overcome the difficulties of crossing Asiatics (diploid) with commercial cultivars (tetraploid). Neonate bollworm larvae were placed on young, excised squares obtained from field-grown cotton. The Asiatic lines were chosen to represent various morphological characters, some of which have been previously associated with resistance. Stoneville 213 was utilized as a susceptible check. After four days, survival and worm weights were evaluated. Significant differences occurred between a number of the Asiatics and the susceptible check. Some lines reduced worm survival by as much as 40%, weight per worm by 80%, and total worm weight by 69%. No association between resistance and morphological traits was apparent in this study.