Figure 6. Responses of spiders to lunges of the model frog. Intact spiders that were in the light, that had been cooled prior to testing, and that were in the dark, usually either reared or leaped, resulting in scores between 2 (jump) and 1 (rear). Spiders with most of their trichobothria disabled (smeared) usually remained motionless or reared. Differences among these four treatments were highly significant (ANOVA, F = 6.51, P = 0.005). Post hoc tests indicated that the Smear scores were significantly lower than those of each of the other groups (Fisher's PLSD, P < 0.05), and that there were no significant differences between the other groups.