What structure in the honey bee picks up sound vibrations in addition to the subgenal organ?

Johnston's organ plays a crucial role in sound detection in honey bees. Located in the antennae of the bee, this organ is specifically adapted to pick up sound vibrations, particularly those generated during communication among bees, such as buzzing or other vibrational signals.

This organ works by sensing the vibrations of the air and provides the bee with important acoustic information that is vital for foraging, mating, and social interactions within the colony. The structure is made up of a series of sensory cells that can detect minute changes in vibrational pressure, making honey bees highly attuned to their environment.

Other options do not have the same functionality: ocelli are primarily involved in light detection and regulation of circadian rhythms, compound eyes focus on visual images, and the maxilla is a part of the mouthparts involved in feeding, not sound perception. Thus, Johnston's organ is recognized as a specialized sensory structure that complements the capabilities of the subgenal organ in sound detection.