A honey bee can sit quietly on a leaf while its abdomen moves slightly. It is tempting to compare that motion with a person's rising chest, but the machinery inside is quite different. Honey bees do not have lungs. Air reaches their tissues through a network of tubes connected to small openings in the body surface.
The names sound technical, but the route is easy to follow: spiracles are the entrances, tracheae are the branching airways, and fine endings bring gases close to living tissues. Learning those three terms helps make sense of an insect that flies, walks and works without breathing through a nose.
Spiracles are openings in the body surface
Arizona State University's honey bee anatomy guide identifies spiracles as openings to the respiratory tubes and shows air sacs inside the bee. These structures are separate from its mouthparts. The tongue-like feeding apparatus that reaches nectar is not a breathing tube leading to a pair of lungs.
For a viewer, this changes where to look on an anatomical diagram. Follow the labels along the thorax and abdomen rather than looking for a miniature human chest. The comparison is useful for orientation, but a bee is not a scaled-down mammal.
Branching tubes bring air close to cells
North Carolina State University's entomology guide describes the insect tracheal system as an increasingly fine network. Oxygen moves from that network toward tissues, while carbon dioxide produced by metabolism moves outward. Diffusion remains important at the small end of the system.
The larger tubes have reinforcing structures that help keep them open while permitting flexibility. Some parts expand into air sacs. These details matter because a working insect bends and moves: its air-delivery system must accommodate a changing body shape rather than behaving like rigid plumbing.
How is this different from our circulation?
In people, the lungs and blood circulation work together to deliver oxygen around the body. The OpenStax biology chapter hosted by the University of Hawaiʻi contrasts that arrangement with insect respiration, where the tracheal network supplies oxygen without using the blood as the main oxygen-transport route.
Bees still have circulation. The point is the division of labor: their internal body fluid and their respiratory tubes do different jobs. Saying “bees have no lungs” should never be shortened to “bees do not need oxygen.” The absence of an organ familiar to us does not mean the absence of the function it serves.
What does abdominal pumping tell us?
Body movements can help ventilate an insect's tracheal system. A study titled Respiration of resting honeybees combined gas measurements with infrared observation. In the tested bees, bursts of carbon dioxide release were usually accompanied by abdominal movements. Respiratory patterns also varied with temperature.
Those measurements explain why a motionless-looking bee may still show small movements. They also show why a phone video cannot provide a reliable respiratory measurement. Researchers needed controlled conditions and instruments to connect the visible behavior with gas exchange.
Do not assign a universal “normal breaths per minute” from a clip. The bee's activity, surroundings and temperature are relevant, and a visible movement does not by itself diagnose health or distress. A single still image provides even less information.
Observe without turning curiosity into an experiment
Watching a resting bee outdoors is enough. There is no need to trap it in a sealed jar, cover openings, apply a substance to its body or alter the temperature to see a response. Those actions change the conditions you were hoping to observe and can harm the insect.
For a simple notebook entry, record the location, approximate weather, whether the bee was feeding or resting, and what movement you noticed. Keep observation separate from interpretation: “the abdomen moved repeatedly” is stronger evidence than “the bee was out of breath.”
At HYVE, learning about honey includes learning about the insect that makes it. Browse the HYVE honey education journal for more bee biology. The next time you notice a bee pause between flowers, remember that a quiet moment can still involve an active, highly specialized respiratory system.
Sources and further reading
Arizona State University Ask A Biologist; NC State General Entomology; OpenStax Biology; and Respiration of resting honeybees, linked above.
Related reading: How a Winter Bee Cluster Stays Warm Without Heating the Whole Hive.
