The caddisflies are hatching now—Rhyacophila among them, along with Zebra…

The caddisflies are hatching now—Rhyacophila among them, along with Zebra Caddisflies and American Long-horned Caddisflies. Rhyacophila are among the most pollution-sensitive aquatic insects alive—their emergence here is significant. Over the past month, all 25 water bodies asses