Advances in visualization techniques now allow us to image the inside of living organisms. A group of scientists* made CT scans of mating Drosophila and were able to observe previously unknown changes that occur in the female reproductive tract during and after mating. These powerful imaging techniques are changing the way we view insects and providing the data for new ideas and avenues of research.
*Alexandra L. Mattei, Mark L. Riccio, Frank W. Avila & Mariana F. Wolfner. 2015. Integrated 3D view of postmating responses by the Drosophila melanogaster female reproductive tract, obtained by micro-computed tomography scanning.
See the entire video: http://www.pnas.org/content/suppl/2015/06/03/1505797112.DCSupplemental