A new weevil species, Cnaphoscapus sternofovelus, is herein described and illustrated, and a key to the species of Cnaphoscapus is also provided. It closely resembles C. bisignatus in the presence of sub-erect brown setae on the antennal scape and funicle segment first slightly longer than second. It differs from the other Cnaphoscapus species in the arrangement of scales in the funicular segments, the presence of prothorax with a small tooth at the basal angle and the presence of a fovea in the middle of the posterior margin of the metasternum. The new species is the first member of the genus Cnaphoscapus reported from India.