Figure 4.

The average attack rate (attacks per second) ±s.e. towards heterospecific intruder males with altered wing coloration for tests involving H. titia. Clear, half and black refer to the hindwing colour treatment (see figure 3). White bar, clear; grey bar, half; black bar, black. Site codes are given above the corresponding bars. Asterisks indicate significant (<0.05) p-values based on repeated-measures analyses of variance.