Morphological differences among Radopholus similis (Cobb, 1893) Thorne, 1949 populations

Eight Radopholus similis populations from three continents and different ho sts were compared morphologically and morphometrically. Reflection of the p osterior or anterior ovary or testis was common in all the populations. Var iability of most taxonomic characters was frequent. Many of the individuals from the Indonesian population had a forked tail end. Scanning microscopy showed that males and females from different populations had several morpho logical differences, especially in the number of anterior hypoptygmata in t he males and annules terminating the vulva of the females. Results of this study confirm that R. citrophilus is a synonym of R. similis.