image credit: James Waters and Jon Harrison; image source; larger image
Argonne University scientists reveal insect respiratory function
The image above is an x-ray of a fruit fly, made with x-rays produced by a particle accelerator. As you can tell from the parts of the image where the legs overlap the body, you are able to see right through the fly.
X-rays are one kind of electromagnetic waves. The image above was made with "coherent" x-rays, which means that all the waves were in step, just like the radiation from a laser.
For an x-ray image of a beetle, showing the breathing tubes inside its body, visit this article.
Living insects can be imaged in this way. To see inside a living beetle, see this University Of Chicago article. Notice the pair of images, which show the beetle airways contracted and expanded. These two images prove that the insect is breathing.
X-rays from free electrons
Visit X-rays from free electrons to learn more about how synchrotron radiation is produced. Be sure to see the second section of this site.