A different look at the back-end of a Rhyacophila sp. (Order: Trichoptera, Family: Rhyacophilid
A different look at the back-end of a Rhyacophila sp. (Order: Trichoptera, Family: Rhyacophilidae). Free-living caddisflies from the family Rhyacophilidae are typically found in fast-moving mountain streams. These were collected in a short, but fast stream connecting two lakes in the Adirondack preserve. They crawl around underneath rocks, using silk to anchor them to the substrate. -- source link