Authors: Williams, CT Ukwungwu, MN Singh, BN Okhidievbie, O

Citation: Ct. Williams et al., Assessment of host plant resistance in Oryza sativa to the African rice gall midge, Orseolia oryzivora Harris and Gagne (Dipt., Cecidomyiidae), with a description of a new method for screening under artificial infestation, J APPL ENT, 125(6), 2001, pp. 341-349

Authors: Williams, CT Ukwungwu, MN Singh, BN Okhidievbie, O Nnabo, J

Citation: Ct. Williams et al., Farmer-managed trials in south-east Nigeria to evaluate the rice variety Cisadane and estimate yield losses caused by the African rice gall midge, Orseolia oryzivora Harris & Gagne, INT J PEST, 45(2), 1999, pp. 117-124

Authors: Williams, CT Okhidievbie, O Harris, KM Ukwungwu, MN

Citation: Ct. Williams et al., The host range, annual cycle and parasitoids of the African rice gall midge Orseolia oryzivora (Diptera : Cecidomyiidae) in central and southeast Nigeria, B ENT RES, 89(6), 1999, pp. 589-597