The African rice gall midge,Orseolia oryzivoraHarris and Gagné has become one of the major biotic constraints to rice production in Nigeria. A survey of gall midge distribution in Nigeria showed that the pest was common in the savannah and forest zones on rice grown under lowland ecologies. Endemic areas were identified which could serve as ‘hot spots’ for varietal screening. Indigenous parasitoids of the pest were identified as:Platygaster diplosisaeRisbec,Aprostocetus pachydiplosisaeRisbec andAphanogmusspp. The dominant parasitoid was, however,P. diplosisae.