抄録
Japanese populations ascribed to Pratylenchus coffeae were comparatively investigated by scanning electron microscope (SEM) and with stepwise linear discriminant function analysis (SLDA). SEM observation of the first lip annule showed 2 different en face patterns among the 6 populations; 3 populations with undivided faces and the remainder with the face incised to demarcate sub-median and lateral sectors. SLDA was successful in discriminating 6 populations into 3 groups. This analysis indicated that Japanese P. coffeae populations could, at least, be divided into 3 distinct species.
