Collembola are organisms that are about 250 to 300 microns in length with what is akin to a hinge in the middle. That's about the size of a dust particle. Without a microscope, they are basically invisible to the human eye. When they are on the skin, they blend right in and are invisible. In fact they are often called the Invisible Bug Biting Syndrome, (IBBS). 

They generally jump up as high as 18" from the floor or ground to the lower legs and ankle area where they relentlessly itch and bite. 

There are about 6,000 species and their purpose is to keep the planet clean of dead organic matter like leaves and dead plants. Read more about them in blog post, "Collembola, Spring Tails, and Snow Fleas Accompany Morgellons," 2/12/21 

Generally very little is published about them but it seems that 90 to 95% of those who complete my questionnaire which is attached, are dealing with both Morgellons and Collembola. 

Lucy found some  fantastic pictures and sent this email. What is amazing is that I always assumed that mites were the carriers of Collembola, but it seems I may have had that backwards and that Collembola seem to be the carrier (vector) for mites and some nematodes to also infect our skin. Lucy writes,

"I found these fascinating photos of collembola.  The explanations of the photos are also well done.  What I found interesting is how mites can attach themselves to collembola as parasites and that collembola can become infected by fungus.  Talk about co-infections!"

https://www.janvanduinen.nl/collembolaengels.html

Lucy