The number of prey consumed daily in the laboratory at 20, 25, 30, and 35°C byGeocoris punctipes(Say) was found to vary by several hundred percent, depending on an individual predator's sex, developmental stage, and the temperature. Nymphs in successively later instars tended to eat more prey daily than did those in earlier instars. Nymphs and adult males consumed greater numbers of prey daily at each higher experimental temperature; the same was true for adult females, except that they consumed fewer prey daily at 35 than at 30°C. Prey were eggs of the soybean looper,Pseudoplusia includens(Walker).