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90. I. grandicollis. Dryocoetes spp. I. perroti -(+)-Ipsdienol. D. valens. 80. Woodborers. I. pini. Unbaited. 70. I. perturbatus. I. perroti -(–)-Ipsdienol. 60. D. simplex. D. rufipennis. 50. Estimated Mean No. of Subcortical Insect Species in Funnel Traps in 2001-2003.
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90 I. grandicollis Dryocoetes spp. I. perroti-(+)-Ipsdienol D. valens 80 Woodborers I. pini Unbaited 70 I. perturbatus I. perroti-(–)-Ipsdienol 60 D. simplex D. rufipennis 50 Estimated Mean No. of Subcortical Insect Species in Funnel Traps in 2001-2003 D. valens-Phero Tech 40 30 20 10 0 3000 6000 9000 12000 0 Total Number of Sub-samples