Figure 3.
The average attack rate (attacks per second) ±s.e. towards conspecific intruder males with altered wing coloration for tests involving (a) H. occisa and (b) H. americana. Clear, half and black refer to the hindwing colour treatment (shown in photos). 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.