What does a stone fly look like?

Stoneflies are typically characterized by their elongated bodies, which range from about 5 to 30 millimeters in length. They have two pairs of membranous wings that are usually held flat over their bodies when at rest, and their wings often feature a distinct vein pattern. Stoneflies also possess long antennae and six legs, with a generally slender appearance. Their coloration can vary, but they are often found in shades of brown, yellow, or olive.