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Fig. 2. The colour loci in the colour hexagon of honeybees, calculated for white
spiders (grey squares, N=50), white daisies (black triangles,
N=55), yellow spiders (white circles, N=30) and yellow
daisies (black asterisks, N=55). The distribution of the colour loci
of white flowers ends at the point indicated by the arrow. B, blue; G, green;
U, UV.