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Background  The red gum lerp psyllid,  Glycaspis brimblecombei  Moore (Hemiptera: Psyllidae), an eucalypt insect pest from Australia, was reported in Brazil in 2003. This study evaluated damage patterns of this pest on  Eucalyptus camaldulensis  Dehn (Myrtaceae) and its hybrids  E. urophylla  X  E. camaldulensis  (urocam) and  E. urophylla  X  E. grandis  (urograndis). In addition, parasitism rates of  Psyllaephagus bliteus  Riek (Hymenoptera: Encyrtidae) on  G. brimblecombei  collected on different eucalypt genotypes are reported.    Methods  Plantation plots of three eucalypt genotypes were evaluated over one year. The eucalypt leaves were collected and examined for attack by  G. brimblecombei . Nymph parasitism of  G. brimblecombei  by  P. bliteus  was recorded.    Results  Damage by  G. brimblecombei  was lower on the hybrid genotypes and on the adaxial surface of the eucalypt leaves.  G. brimblecombei  egg and nymph density were negatively correlated with monthly rainfall. Nymph parasitism of  G. brimblecombei  by  P. bliteus  was low (2.9%) independent of genotype and did not vary throughout the year.    Discussion  Our data indicate the use of less susceptible eucalypt genotypes (e.g., hybrids) as an alternative to  G. brimblecombei  management. Because of the current low mortality rates for  G. brimblecombei  resulting from  P. bliteus  parasitism, biological control with this natural enemy is not recommended as a management strategy for  G. brimblecombei .

Glycaspis brimblecombei (Hemiptera: Psyllidae) attack patterns on different Eucalyptus genotypes