“…Pratylenchus brachyurus, a cosmopolitan species, appears as the predominant species on yam in Nigeria and Ghana, which is in agreement with other studies that have reported P. brachyurus from yam in Nigeria and West Africa ( Luc and de Guiran, 1960 ; Unny and Jerath, 1965 ; Caveness, 1967 ; Bridge, 1972, 1973 ). In this region, the polyphagous P. brachyurus has also been recorded as a pest of numerous crops ( Miège, 1957 ; Luc and de Guiran, 1960 ; Bridge, 1973 ; Egunjobi, 1974 ; Egunjobi and Larinde, 1975 ; Guerout, 1975 ; Coyne et al, 1999 ; Castillo and Vovlas, 2007 ), including an interception from Colocasia sp. (another tuber crop) from Nigeria to China ( Zhao et al, 2011 ).…”