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Red gum lerp psyllid Glycaspis brimblecombei Moore (Hemiptera, Psylidae) biology in Eucalyptus spp.

Glycaspis brimblecombei Moore, also known as red gum lerp psyllid, is characterized to be specific to the genus Eucalyptus. This work aimed to evaluate G. brimblecombei biological cycle in Eucalyptus spp. The work was accomplished in acclimatized chamber (BOD), with temperature of 26 °C and photophase of 12 hours. Eucalyptus species used in this study were: Eucalyptus camaldulensis, E. tereticornis, E. urophylla, E. grandis, Corymbia citriodora and E grandis x E. urophylla hybrid ('urograndis'). Initially 100 replications (nymphs) per treatment (Eucalyptus species) were prepared. The evaluations were daily and the following biological parameters were measured: nymph phase duration and viability, adult longevity, number of eggs/female, duration of incubation period, egg number and viability, total cycle, longevity and duration of adults. The results demonstrated that, except for C. citriodora, the other eucalypt species offer conditions to G. brimblecombei biological development, being E. camaldulensis the most adequate species.

Lerp psyllid; pest forest; forest protection


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