In the age of sexual maturity of queen, mating occurred at 6.7% immediately after eclosion and it was the highest as 85.0% at 10 days after emergence. However, a remarkable decrease was occurred at 20 days after the emergence. With regard to oviposition rate, the highest rate was observed as 81.3-81.8% at 6 to 10 days of eclosion. The rate of colony foundation and progeny-queen production were the highest as 43.8% and 37.5%, respectively, at 8 days of eclosion. In the age of sexual maturity of male, mating rate was as high as 38.3% immediately after the eclosion, the highest as 80.0% at 25 days of eclosion, and 76.6% at 8 days of eclosion. The oviposition rate was the highest as 76.9% at 6 days of eclosion, and decreased to 75.0% at 8 days and 72.7% at 10 days of eclosion. Summarized, our results indicate that sexual maturity for mating of B. terrestris is most favorable 6-8 days after eclosion for queen and 6-10 days after for male.

• Hyung Joo Yoon(Department of Agricultural Biology, The National Institute of Agricultural Science, RDA)
• Kyeong Yong Lee(Department of Agricultural Biology, The National Institute of Agricultural Science, RDA)
• Minji Shin(Department of Agricultural Biology, The National Institute of Agricultural Science, RDA)
• Sun Yeoung Kim(Department of Agricultural Biology, The National Institute of Agricultural Science, RDA)