The red flour beetle,Tribolium castaneum(Herbst), and the Indian meal moth,Plodia interpunctella(Hübner). are important pests of stored products (USDA 1965). Recent studies at the Savannah, Ga., Stored-Product Insects Research and Development Laboratory showed that the red flour beetle feeds on dead or moribund adults of the Indian meal moth (G. L. LeCato and B. R. Flaherty, unpublished). They have shown also that such feeding increased progeny production and rate of development and thus led to larger populations of the red flour beetle.