Isoperla carbonaria is a species of stonefly that can be found In Italy, France, and Switzerland. It prefers to reside near streams in mountainous regions, at elevations between 0â€“1,150 feet above sea level. Immature individuals reside in cold waters while adults are terrestrial fliers. It reaches a body length between .3 and .5 inches, which is its distinguishing trait, and is typically yellowish in color. Larvae are known to consume Chironomidae, which can be found under the surface of the floor in streams.
Image Caption: Isoperla carbonaria. Credit: Hectonichus/Wikipedia (CC BY-SA 3.0)