Fig. 3.

Proportion of visits made to traits characteristic of Brachyglottis bellidioides rather than Brachyscome sinclarii for insects in the New Zealand alpine. Means and 95 % confidence intervals are shown for colletid bees (Hylaeus) on the right as indicated by the arrows and for syrphid flies (Allograpta) in all other cases. Sample sizes are numbers of foraging bouts. The solid line represents the null hypothesis. (A) Proportion of visits to yellow flowers in a two-way choice between flowers painted white (to resemble Brachyscome) vs. yellow (to resemble Brachyglottis). Left of the dotted line: arrays with just Brachyscome. Right of the dotted line: arrays with just Brachyglottis. (B) Proportion of visits to Brachyglottis in a two-way choice between flowers of the two species painted the same colour, either white (left of the dotted line) or yellow (right of the dotted line.)