hind wings, and postulated this spraying to be a part of their courtship displays. Thus, another hypothesis on the purpose of wing buzzing is that the wing vibration could attract other Euglossini. Behavior Foraging activities Females forage for pollen, nectar, resin, mud, and feces. These materials are packed in the corbiculae and brought back to the nest. Pollen and nectar foraging trips are on average longer than other resource trips. Mud collecting usually takes only a few minutes while pollen and nectar collecting could take up to two hours. Collection times for different materials are also very specific. The female bees collect pollen and nectar from dawn to around noon, while mud, feces, and resin were collected mostly in the afternoon. E. meriana are diurnal, limiting foraging to periods between dawn and dusk. Mating behavior Territoriality and transiency The euglossine bees, also commonly known as “orchid bees”, are best known for the male bees’ collection and attraction of fragrance produced by orchids and other flowers. The exact role of fragrances in the mating system remains unclear, as they are not observed to use them in an obvious manner to attract females or mark their territory. After emergence as an adult, males spend much of their time searching for nectar and fragrances. They can also be found defending territories where mating will sometimes occur. In a four-month study of male territoriality conducted by Stern, E. meriana males showed two alternative behaviors of territoriality and transiency. Transient male bees did not defend territories, but instead flew from one territory to the other. They also did not engage in physical contact with the territorial males. On the other hand, territorial males patrolled an area around a tree and used the same territory for up to 49 days. It also appeared that they gave up territories to new males without violence. Males defend territories solely for mating, and no other resources such as fragrances, nests, nest construction materials, nectar, or pollen are found at these territories. According to Stern's observations on male behavior, transient males hover around a territory while facing the territorial male, and then descend slowly. They will then fly up to the same level as the territorial male and interact with each other, flying around a territory with one bee seeming to chase the other without any physical contact. The territorial male was observed to fly in a zig-zag pattern consistently