Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
This is the first fully formed caddis pupa (technically, a pharate adult) that I've collected and photographed alive and healthy. I'll put a video of this specimen online soon, too.
This caddisfly was collected from Cayuta Creek in New York on April 14th, 2007 and added to Troutnut.com by Troutnut on April 22nd, 2007.