These were clinging to a rock in the middle of the creek; underwater with a bit of current sweeping over them.
Giant Casemaker Caddisfly in vernal pool
One of the larger and more beautiful finds of the evening.
The caddisflies are an order, Trichoptera, of insects with approximately 12,000 described species. Also called sedge-flies or rail-flies, they are small moth-like insects having two pairs of hairy membranous wings. They are closely related to Lepidoptera (moths and butterflies) which have scales on their wings, and the two orders together form the superorder Amphiesmenoptera. Caddisflies have aquatic larvae and are found in a wide variety of habitats such as streams, rivers, lakes, ponds, spring seeps, and...