Snow Fleas Are a Thing and They Live in Colorado
I remember my very first interaction with the pest known as a flea. It was in 2008 and we recently moved to Saint Petersburg, Florida from Oregon. Shortly after moving into the house we were living in, our dog began to scratch, then we began to scratch. Days went by and we couldn't figure out why.
Turns out the sandy soil in the backyard had a pretty decent infestation of sand fleas. To this day, I still have scars from scratching those vicious bites from those nasty bugs.
Since our time in Florida, we have been thankful to have not had any further interactions with fleas. According to CSU Extension, there are about 80 different flea species in the state of Colorado. It is one of the greatest numbers found in any state. Thankfully, flea issues are not as common in the state of Colorado due to the dry climate.
One type of Colorado flea is the Springtail. Also known as the Snow Flea. Springtails are harmless to humans and larger animals as they cannot bite. CSU Extension states that the "Snow Flea" phenomenon is bizarre as these Springtails can be observed in large numbers on the top of thawing snow.
The Springtails work their way up through the snow and can look like dirt on the snow, but in reality, it is a large population of the Snow Flea.
They might be harmless to us humans and our pets, but it still doesn't mean that it won't make my skin crawl just thinking about them.
Source: CSU Extension