Abstract
Bursaphelenchus leoni was found in wood of a severely wilted pine tree (Pinus radiata) in South Africa. Morphological studies and morphometric measurements showed the South African population to be conspecific with B. leoni which is widespread in southern Europe and indigenous in the Mediterranean region. In addition, molecular biological tests (RFLP analysis of amplified ribosomal DNA) confirmed this diagnosis and allowed comparisons with other Bursaphelenchus spp. from pine and other trees, i.e. B. xylophilus, B. mucronatus, B. fraudulentus and B. sexdentati. This is the first record of a Bursaphelenchus species in South Africa as well as in the southern hemisphere. P. radiata is recorded as a new host for B. leoni.
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