Utah State University Extension
Springtails are small, abundant, wingless insects of the order Collembola that live in a variety of moist habitats. Because of their small size and micro- habitat, they are seldom observed. Most of them live in the soil or in other concealed situations.
Karren, Jay B. and Roe, Alan H., "Springtails" (2001). All Current Publications. Paper 962.