Fig. 4 in Color strategies of camellias recruiting different pollinators

Fig. 4. Color loci of petals and anthers plotted in the visual spaces of pollinators. (A) Color loci in the bee color hexagon (Chittka, 1992). The central circle (<0.1 hex units) encloses the uncolored category that appears achromatic for bees (Chittka et al., 1993). The curved line represents the spectral locus of theoretical pure stimuli for Apis mellifera (Chittka and Kevan, 2005). (B) Color loci in the UVS- avian tetrahedron. In both models, the box in the center of the hexagon indicates the achromatic center. The excitation of UV, blue, green, and red is indicated with respective points in the hexagon and tetrahedral spaces. (A, B) The loci of three individuals were plotted (n = 3 for each species). [color in online only]. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)