New Zealand Plant Protection 54 (2001): 67-70
Host suitability of some eucalypts for development of the Eucalyptus leafroller (Strepsicrates macropetana)
N. Mauchline, T. Withers and Q. Wang
ABSTRACT
Strepsicrates macropetana (Lepidoptera: Tortricidae) is a pest occurring only on species of Eucalyptus. No-choice trials were carried out by inoculating eggs onto potted plants of E. nitens, E. saligna, E. fastigata and E. regnans held in a glasshouse. A number of development parameters, including pupal weight, time to adult eclosion and survival from egg to adult, were measured. All hosts were suitable for complete development of larvae, however mean survival to adult was highest on E. fastigata (61%). The shortest time to eclosion (40 days) occurred on E. nitens. There was no difference in pupal weight between host species. Adult female fecundity was variable. The results indicate that the species of Eucalyptus tested, which were from subgenera containing economically important species, all supported development of S. macropetana.
Keywords: Strepsicrates macropetana, Tortricidae, Eucalyptus, host range, development.
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