Development of G lycaspis brimblecombei M oore ( H emiptera: A phalaridae) on E ucalyptus camaldulensis D ehnh. and E ucalyptus dunnii M aiden

• Published in: Agricultural and forest entomology 2018-02, Vol.20 (1), p.73-80
• Main Authors: Cuello, Eliana M., López, Silvia N., Andorno, Andrea V., Hernández, Carmen M., Botto, Eduardo N.
• Format: Article
• Language: English
• ISSN: 1461-9555; 1461-9563
• DOI: 10.1111/afe.12230

The red gum lerp psyllid G lycaspis brimblecombei is an invasive insect species, native from A ustralia, that specifically feeds on E ucalyptus trees. It has invaded several countries throughout the world. In A rgentina, it was first recorded in 2005, although little is known about its ecology in the region. We assessed G . brimblecombei population development on E ucalypus camaldulensis and E ucalyptus dunnii using samples of branches for the immature stages and yellow sticky traps for the adults. We also identified the meteorological variables associated with changes in the red gum lerp psyllid abundance. The abundance of eggs, nymphs and adults stages of G . brimblecombei was significantly greater on E . camaldulensis than on E . dunnii in the 2 years of the survey. G lycaspis brimblecombei development was complete on E . camaldulensis where all instars were present, even in the unfavourable seasons. The full development of the psyllid population was not observed in E . dunnii where a high mortality of the first and second nymphal instars was detected. Temperature and relative humidity were the variables that mostly affected red gum lerp psyllid abundance, whereas no effect of rainfall was detected.