The cowpea aphid Aphis craccivora Koch (Hemiptera: Aphididae) is an important pest on several species of legumes. We investigated the development periods and survivorship of A. craccivora nymph, and longevity and fecundity of A. craccivora adult. The study was conducted at five constant temperatures of 10, 15, 20, 25, and 30°C, respectively. The lower developmental threshold (LDT) and thermal constant (K) of A. craccivora nymph stage were estimated by linear regression. Higher temperature threshold (TH) and lower temperature threshold (TL) were calculated by biophysiological model. Developmental completion of A. craccivora nymph stage was described using a two-parameter Weibull distribution model. Life table parameters were estimated by the jackknife method.

• Chang Woo Ji(Crop Protection Division, Department of Crop Life Safety, National Institute of Agricultural Sciences, RDA)
• Change-Gyu Park(Crop Protection Division, Department of Crop Life Safety, National Institute of Agricultural Sciences, RDA)
• Byeong-Ryoel Choi(Crop Protection Division, Department of Crop Life Safety, National Institute of Agricultural Sciences, RDA)
• Bueyong Park(Crop Protection Division, Department of Crop Life Safety, National Institute of Agricultural Sciences, RDA)
• Jeong-Hwan Kim(Crop Protection Division, Department of Crop Life Safety, National Institute of Agricultural Sciences, RDA)
• Jeong Joon Ahn(Research Institute of Climate Change and Agriculture, National Institute of Horticultural and Herbal Science, RDA)