The Response of Amphicoma Spp. (Coleoptera; Glaphyridae) Beetles to Red Models Differing in Area, Shape, and Symmetry

Field experiments investigating the attraction of Amphicoma spp. beetles to red, nonrewarding, scentless models have shown that (1) attractiveness is positively and linearly related to model size; (2) for models of similar size, contour density does not affect attractiveness; (3) bilateral models are more attractive than radially symmetrical models with the same area. The results are discussed in comparison to the spatial vision of honeybees and with regard to the flower preference of beetles.