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 one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.
Martinlf on Sep 4, 2019September 4th, 2019, 1:28 pm EDT
Hi Brian, no I don't think so. Antron sparkle yarn, which consists of fine synthetic fiber strands is akin to zelon and other synthetics used often for shucks, parachute posts, etc. If the dubbing is made of "sparkle yarn" the antron would be used to dub fly bodies to give them a subtle reflective quality. Ice Dub is more like shredded mylar, it is more reflective and flat strands. It's often used for nymph collars and sometimes in streamer wings, among other uses. Look for YouTube videos of frenchie nymphs to see someone tying with ice dubbing. Not all frenchies have ice dubbing, but this one shows it. https://www.youtube.com/watch?v=bWsL_XDtX5I
"He spread them a yard and a half. 'And every one that got away is this big.'"