Two species of genus Monopis (M. pavlovskii, M. congestella) from detritus were found in raptorial bird cage. We used feather-traps that include detritus of raptorial bird, each two traps deployed at Mt.Gyeyang in Incheon and Mt.Cheonchuk in Uljin, respectively. Larvae of tineid feed on keratin sources in the detritus of the raptorial bird cage such as pellets, furs, and feathers. Biological information regarding M. pavlovskii and M. congestella and photographs of their immature stage are provided. It is likely that detritus of raptorial bird cage provide a suitable habitat for keratophagous tineids in nature because of a wide variety of keratin in the raptorial bird cage.