Welcome back to the new NEFF. Take a break from Twitter and Facebook. You don't go to Dicks for your fly fishing gear, you go to your local fly fishing store. Enjoy!
I tied up a bunch of those nymphs using TMC 2488 hooks in size 156. I'd post a picture but I dont have a lense attachment for the microscope I used to tie them. The hardest part of the pattern is dividing up the Danville 6/0 olive thread into individual strands.
Andy, this mayfly is the exception - this text was embedded below the video.........
Most mayflies lay their eggs immediately after mating; the eggs then take anywhere from 10 days to many months to hatch. Cloeon cognatum is an exception. This species is ovoviviparous, which means that a mated female holds her eggs internally until embryonic development is complete (about 18 days), after which she lays them in water and they hatch immediately. This female was dropped onto the water surface moments before the video started.