Effect of varying temperature/ (20,27,31 and 35 0C) and relative humidities (50,65,75,80 and 85%) on different life stages, of Campoletis chlorideae Uchida indicated that there was no development of the parasitoid at 35 0C, which was detrimental to different stages.  As the temperature increased larval period decreased.  Larval period occupied 7.3 days at 31 0C and 9.7 days at 20 0C. However at 27 0C and 80 per cent relative humidity the larval period occupied 9 days which was found favorable combination for normal growth.  As the temperature increased the pupal period and adult emergence also decreased.  The adult emergence increased as the relative humidity increased up to 80 per cent.  A maximum of 87.0 per cent emergence was recorded at 27 0C and 80% relative humidity.