Honeybee (Apis millifera) drone in hive in Ohio, USA. Drones are male bees that can be differentiated from the more abundant females by their larger bodies and larger eyes. Drones perform no work in a honeybee colony and their main function is to fertilize queens. This one is being parasitized by a varroa mite (Varroa jacobsoni) located near the center of the bee's thorax.