The survival ofHippodamia convergensGuérin-Méneville on grain sorghum,Sorghum bicolor(L.) Moench, in the Texas High Plains was investigated. Analysis of survivorship data revealed that most of the generation mortality occurred in the egg or early larval stage. This reduces the effectiveness ofH. convergensas an aphid predator in grain sorghum because the predator either does not survive to feed at all or feeds for only a fraction of its developmental time.