Spatial distribution of eggs and number of eggs laid by R. prolixus when the stimulus consisted on hen feathers. a. Number of eggs at each zone of the control tube. b. Number of eggs at each zone of the test tube. Statistical differences were found between zones. The results of all pair-wise comparisons between zones are shown with letters. Square surrounding number four indicates the position of the stimulus. c. Total number of eggs at the control and test tubes. “*”denotes statistical significance (p < 0.05); N = 16 for all figures.