Figure 1.

Interaction probability as a function of (a) degree of mismatch, (b) flower head display size and (c) flower head density. A degree of mismatch < 0 indicates that floral nectar tube depth exceeds pollinator proboscis length and a degree of mismatch > 0 indicates that pollinator proboscis length exceeds floral nectar tube depth. Each dot represents a particular insect species visiting a particular plant species (1) or not visiting a particular plant species (0). Colours and shapes represent the different insect orders (blue closed circles: Lepidoptera, green open triangles: Hymenoptera and red open squares: Diptera). N = 1040.