Mean walking time (± SD; n = 50) of experienced females of Theocolax elegans in a four chamber olfactometer. LEG: areas above Petri dishes with grains which had been infused 2 μl extract from the heads and thoraxes of 3rd-4th instar weevil larvae, SG: areas above Petri dishes with grains which had been infused 2 μl of sodium phosphate alone, C: areas above control Petri dishes. Bars with different letters are significantly different at P < 0.05 (Friedman ANOVA followed by Wilcoxon-Wilcox-test for multiple comparisons).