Figure 2.

Results of field experiments 1 (2–5 June 2004; 12 replicates) and 2 (17–20 August 2004; 24 replicates), comparing captures of H. rufipes on adhesive traps baited with a blend of (−)-β-pinene, (−)-α-cubebene, (+)-spiroaxa-5,7-diene and (+)-δ-cadinene in release rates of, respectively, 25, 2, 2 and 184 μg per 24 h, or baited with lures lacking one of the four components (experiment 2). Location: near Regina, Saskatchewan, Canada. Bars with different letters are significantly different (ANOVA, Zar 1999, followed by Tukey–Kramer HSD comparison of means; jmp statistical software, p<0.05).