Aphelenchoides ritzemabosi (Schwartz, 1911) Steiner & Buhrer, 1932a

After A. fragariae, A. ritzemabosi has the highest number of reported hosts in both flowering plants and ferns (Table 1, Fig. 1). It is particularly problematic on Chrysanthemum L. and has previously been reported from circa 200 plant species (Escuer & Bello 2000, McCuiston 2007). That number increases to 321 in this paper with 314 flowering plants and seven ferns (Table 1). Escuer & Bello (2000) mentioned that several weed species or noncultivated plants are suitable hosts for this species and further studies should be addressed to confirm this possibility. Reports in Asteraceae Bercht. & J. Pres are especially numerous (see online database) and around 85 species of this family have been mentioned as associated plants with A. ritzemabosi .