oa Journal of the Entomological Society of Southern Africa - Preliminary observations on the choice of host plants by adults of the citrus psylla, Trioza erytreae (Del Guercio) (Homoptera: Psyllidae)
Preliminary observations have been made on the choice of host plants by adults of the citrus psylla, Trioza erytreae (Del Guercio). This oligophagous insect was given the choice between leaves of Citrus limon (rough lemon) and four indigenous host plants, namely, Vepris undulata, Clausena anisata, Fagara capensis and Calodendrum capense. Of these hosts, Ci. limon was significantly more attractive to adults of T. erytreae as a feeding and oviposition site, and this preference was consistent even when the test psyllids had been reared for at least two generations on either V. undulata or Cl. anisata. In all cases, of the indigenous host plants tested, V. undulata was the most attractive to adults of T. erytreae for feeding and oviposition and the other indigenous plants were much less attractive. The implications of these findings are discussed.
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