Oak galls between March-September in 2007, 2008 and 2009, in the Inner Western Anatolian, Turkey were collected. Inquilines Ceroptres cerri Hartig, 1840 and Ceroptres clavicornis Mayr, 1872 were reared in laboratory conditions. These species make new records for the Turkish Fauna on both genus and species levels. We provide details on geographical distribution, their developed galls and hosts. We also provide the collecting time of the galls and emergence time of the adult wasps.