Three experiments were carried out to investigate different aspects of survival of starved adult Tribolium castaneum Herbst. Survival of females was low when they were placed in medium 5-10 days before starvation, apparently because of oviposition activity. Heavier beetles of each sex survived more than lighter ones. Beetles starved for several days regained their initial weight when medium was made available. Inbred strains of T. castaneum survived less than outbred ones.