Variations in body size represent an important driver in colonization of new niches, indicated by ecogeographic patterns. Bergmann's Law describes an ecogeographic pattern where species with larger body size are distributed at higher latitudes. However, Bergmann's law sensu lato includes abiotic factors such as temperature and altitude to complement the explanation of this pattern. Consequently, Bergmann's law sensu lato extends the modified pattern within groups that had not previously been included before, specifically, the Class Insecta. Variations in insect body size are known to influence foraging dynamics. Therefore, the environmental information that insects perceive and process varies with changes in absolute and relative body size. In this study, the Bergmann sensu lato law applied in A. mellifera was evaluated within an altitudinal cline in two areas of the Colombian eastern mountain range. We include the variations in morphometric and sensory traits, and their relationship with the perception of olfactory information and its consequences on foraging activities. We found that bees of lower elevation exhibited lower magnitude for sensory and morphometric traits, unlike bees that are distributed in the locality with higher elevation. This pattern follows the principle of Bergmann sensu lato based on an altitudinal cline. The allometric variations at the morphometric level evaluated in the study have an effect on the sensory features of A. mellifera. Consequently, we suggested how the temperature associated with the altitude shapes the A. mellifera communities, specifically in pollination tasks.
