The temperature-dependent development of the forensically important flesh fly Liopygia (Thomsonea) argyrostoma (Robineau-Desvoidy) (= Sarcophaga argyrostoma) was studied at six constant temperature regimes in the laboratory. Total developmental time of L. argyrostoma from larviposition to adult emergence was 54.9 ± 1.45, 31.3 ± 1.1, 22.2 ± 0.67, 16.3 ± 0.54, and 14.9 ± 0.4 days (±S.D.) when reared at 15, 20, 25, 30, and 35°C, respectively. At 8°C, larval development was not completed. From linear regression of development rates of five of the six studied constant temperature regimes, it was determined that the minimum development threshold (t_L) for total immature development is 7.4°C, and the overall thermal constant (K) for L. argyrostoma is 396.4 ± 19.18 (mean ± S.D.) day-degrees (DD) above the threshold.