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Fig. 7. The probability of eliciting an ipsilateral scratch differed when different
regions on the dorsal surface of a forewing were stimulated. The probability
of eliciting a scratch was generally higher for trailing edge regions
1–4 (A) than for leading edge regions 6–9 (B). Females had a
higher likelihood of scratching than males for all regions except the wing tip
(region 5; A, C). All of the scratches analysed started with the tarsus in the
anterior start position (C). Wing regions are indicated with coloured
numerals, and the claval furrow is indicated by a broken line. The vannal
region of the wing above the claval furrow is normally folded across the
dorsal surface of the body, but is shown here flattened out. Dotted arrows
indicate corresponding wing regions in both histograms. Boxes indicate the
interquartile range, containing 50% of values, whiskers indicate the range,
and horizontal lines within boxes indicate the median. Where there was no
variability, only the median is shown as a horizontal line.
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