Seasonal Fluctuation of Egg Mortality of the Bean Bug, Riptortus clavatus (Hemipteras Alydidae) in Soybean Fields and Developmental Characteristics of an Parasitoid, Gryon sp. (Hymenoptera: Scelionidae) as its Main Factor

Jung, Jin-Kyo (Crop Protection Lab., National Crop Experiment Station) ;
Im, Dae-Joon (Entomology Division, National Institute of Agricultural Science and Technology) ;
Park, Jong-Ho (Crop Protection Lab., National Crop Experiment Station) ;
Youn, Jong-Tag (Legume Cultivation Lab., National Crop Experiment Station)