Abstract
The severe and yellows strains of cowpea mosaic virus, transmitted from cowpeas to cowpeas by the bean leaf beetle, Ceraloma trifurcata (Forster); the banded cucumber beetle, Diabrotica balteata LeConte; the spotted cucumber beetle, D. undecimpunctata howardi Barber; the western corn rootworm, D. virgifera LeConte; and the striped cucumber beetle, Acalymma vittatum (F.), exhibited no vector specificity for species within the sub family Galerucinae, family Chrysomelidae. Each beetle species transmitted both virus strains equally well. The banded cucumber beetle, the spotted cucumber beetle, the striped cucumber beetle, and the western corn rootworm are new vectors of cowpea mosaic virus. The greater vector efficiency and retention of infectivity of both the banded cucumber beetle and the bean leaf beetle were correlated with their more extensive feeding on the cowpea virus source plants and test plants.
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