author(s)
Ananna Ghosh, Muhammad Sohel Abedin and Md. Monwar Hossain

abstract
Captive rearing of Papilio polymnestor (Blue mormon) and Chilasa clytia (Common mime) were carried out in the campus of Jahangirnagar University, Bangladesh during March 2016 to October 2016. The Citrus limon and Citrus maxima were used as larval host plants for P. polymnestor, while the Litsea glutinosa was used as larval host plant for C. clytia. The egg was laid singly by P. polymnestor on the underside of leaves of the host plant, whereas C. clytia was preferred to lay egg singly on the bottom of the tender leaves. The duration of different developmental stages (egg, larva and pupa) of these two butterfly species were recorded. P. polymnestor and C. clytia took 36.4±0.22 and 31.6±0.22 days respectively to develop from egg to adult. The average temperature and relative humidity during the rearing period were 33°C±1.04 and 81±1.21%. Captive rearing may be a part of the revival program for many threatened species; therefore, this study may be helpful in the process of conservation of endangered butterflies and in developing ecotourism industry in Bangladesh.