Experiments have been performed to investigate biological characteristics of Diglyphus isaea (Walker), an ectoparasite of Liriomyza trifolii (Burgess). At 25℃, development time of D. isaea was estimated as 1.3 days for eggs, 4.5 days for larvae and 6.3 days for pupae. Adult longevity was 25.1 days, and a female adult could lay 305.3 eggs throughout its lifetime. Number of L. trifolii parasitized or killed by the wasp was 962.2 individuals/adult. Most of all parasitized or killed larvae were identified as third instar. With 20% honeyed water as food source, half of the adults could survive 180 days at 5℃, 150 days at 10℃, and 90 days at 15℃. After storing at 10℃ with absolute honey for 30 days, 70 days and 140 days, a female adult in room temperature laid eggs 190.8 individuals, 104.0 individuals and 89.4 individuals, respectively.

아메리카잎굴파리 외부기생봉인 Hemiptarsenus zilahisebessi의 수명은 20, 25, 3에서 각각 23.0일, 16.9일과 12.7일 이었으며 특히, 와 3에서는 교미후 바로 산란이 이루어졌다. 암컷의 산란수와 일평균산란수는 20, 25, 3에서 각각 82.3개/3.6개, 90.3개/6.0개, 95.5개/7.8개로 온도가 높아질수록 많아지는 경향이었다. H. zilahisebessi이 내적자연증가율과 순증식율은 20, 25, 3에서 각각 0.1160/31.0, 0.1852/40.2. 0.2659/40.8이었다. 암컷은 주로 3령유충에 산란하였으며 기주령기에 따른 성비는 1령에서 0.1, 3령에서 0.42로 기주유충이 클수록 암컷의 많아졌다.