This is a small fungus beetle Derodontus trisignatus under the microscope, bright field illumination, 10x objective, horizontal field of view is about 1.2mm, focus stack:
If you like this image, prints and apparel available via Redbubble.
You can license the photos for commercial and personal use via Alamy: https://www.alamy.com/brightfield-micrograph-of-derodontus-trisignatus-small-fungus-beetle-horizontal-field-of-view-is-approximately-119mm-image413357812.html