Ips Grandicollis  (Eichhoff) (Coleoptera: Scolytidae) - a bark beetle on a mission.

Catherine Gitau *1, Angus Carnegie 2, Robin Bedding 3, Richard Bashford 4, Geoff Gurr 1

1 EH Graham Centre for Agricultural Innovation ((DTIRIS) NSW and Charles Sturt University)
2 Department of Trade, Investment, Regional Infrastructure & Services NSW, Orange NSW 2800, Australia
3 CSIRO Entomology, Clunies Ross Street, Acton, ACT 2601, Australia
4 Forestry Tasmania, 79 Melville Street, Hobart, TAS, Australia

Sirex wood wasp, Sirex noctilio Fabricius (Hymenoptera: Siricidae), has been managed effectively by the nematode Beddingia siricidicola (Beddingidae) until the recent, unprecedented occurrence of the exotic bark beetle, Ips grandicollis (Eichhoff) (Coleoptera: Scolytidae). The bark beetle is disrupting the Sirex biocontrol programme by attacking trap trees primed for nematode introduction. Hence, we monitored trap trees for I. grandicollis in five states of Australia where pine trees are grown commercially in order to quantify the magnitude of threat facing Sirex biological control. In this poster, we map the geographical regions where suppression of I. grandicollis is urgently required and in addition, summarise factors that may favour distribution and spread of the bark beetle in Australia. 

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