oa Journal of the Entomological Society of Southern Africa - The development of the citrus psylla, Trioza erytreae (Del Guercio) (Homoptera: Psyllidae), on Citrus lemon and four indigenous host plants

Volume 31, Issue 2
  • ISSN : 0013-8789



The nymphal development of the citrus psylla, Trioza erytreae (Del Guercio) was followed on five different host plants in the family Rutaceae. Development was compared on Citrus limon (rough lemon) and four indigenous hosts, namely, Vepris undulata, Clausena anisata, Fagara capensis and Calodendrum capense. The suitability of these hosts for development of the psyllids was gauged (i) by the sizes attained by the nymphs, (ii) by the durations of the nymphal instars and (iii) by the mortalities of the nymphs on each host plant. It was concluded that V. undulata and Cl. anisata were most suitable for development of T. erytreae and that these plants are probably among the original indigenous hosts. Ci. limon and F. capensis were less suitable for development but still adequate. whereas Ca. capense was found to be entirely unsuitable.

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