1. Selective pressures exerted on the feeding behavior of animals have been extensively studied to understand their foraging patterns. In herbivores, specific within-plant patterns of resource exploitation have been reported, but their determinants remain poorly understood. 2. Here, we describe and decipher the determinants of the foraging pattern of the pollen beetle, Brassicogethes aeneus, a pollinivorous insect that is a pest of oilseed rape (Brassica napus). This insect feeds from flowers for almost all of...