The southern chinch bug, Blissus insularis Barber (Hemiptera: Blissidae), is a difficult pest to manage on St. Augustinegrass in Florida. Insecticides are applied up to six times a year to control this pest. Resistance to insecticides has been documented as a result of the strong selection pressure placed on chinch bug populations. Mechanisms of insecticide resistance in this pest have not been studied. Our objective for this study was to develop mass rearing methods for B. insularis to allow us to investigate insecticide resistance mechanisms. To evaluate the success of the rearing method, time of oviposition, fecundity, and percent survival from egg to adult were monitored. Blissus insularis adults were collected from Alachua Co., FL, and placed into plastic containers with fresh corn on the cob and two cotton diaper towels rolled to 1.7-cm diameter to be used as an oviposition substrate. The cotton rolls were collected at 0700, 1500, and 2300 h. Any eggs present were counted then transferred into separate nymphal chambers containing 'Palmetto' St. Augustinegrass. Containers were held at 14 L: 10 D, 70-85% RH, and 31-33°C in the laboratory. The highest number of eggs were collected at 2300 h, suggesting that chinch bugs lay the most eggs in the late afternoon and early evening. Adults mostly emerged as brachypterus. F₁ females began laying eggs within 10 d after molting to the adult stage. Adults maintained under these conditions lived for 3-4 months.