Pseudococcus orchidicola and Pseudococcus longispinus, a notorious cosmopolitan pest species of mealybugs, known to be distributed indoors in Korea. The effect of temperature on the development of P. orchidicola and P. longispinus was studied. The duration of nymphal period of the two mealybugs at 24 and 28℃ have been recorded. Developmental duration of P. longispinus was longer than P. orchidicola in both females and males. The adult longevity was estimated to 74.9 and 91.1 days at 24℃ for P. orchidicola and P. longispinus, respectively. The average fecundity per female was greater at 28℃. The survival of P. orchidicola and P. longispinus during winter at outdoor was failed.

• Dae-Hoon Jeong(Department of plant Medicine, Chungbuk National University)
• Yejin Kyung(Department of plant Medicine, Chungbuk National University)
• Hyun Kyung Kim(Department of plant Medicine, Chungbuk National University)
• Hyun-Na Koo(Department of plant Medicine, Chungbuk National University)
• Gil-Hah Kim(Department of plant Medicine, Chungbuk National University)