Taxonomy, evolution and phylogeny of the genus Radopholus (didelphic species) according to morphological data, with a key to species (Nematoda: Tylenchida)

A.Y. Ryss

Abstract. Present taxonomic status and synonymy of the didelphic species of the genus Radopholus Thorne are considered. A monoentry polytomous key to Radopholus is presented, as well as the rows of characters and a matrix of species and characters which were used for the phylogenetic analysis in the PAUP package. Phylogenetic tree of the genus includes four main species groups (clusters); all the species of the Indo-Asian origin (not inhabiting Australia and Oceania) form a separate monophyletic branch. Basing on the frequency analysis of the character states among the species of the genus, the conclusions on the main morphological adaptations of Radopholus are drawn.

Zoosystematica Rossica, 2002, 11(2): 243–256 ▪ Published in print 25 June 2003

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