The Blue Assassin is hands-down one of the most effective midge mergers I've ever used, especially on tailwater such as the Chattahoochee Tailwater below Buford Dam or on the Toccoa.
Developed by Chris Scalley of River Through Atlanta Guide Service, the Blue Assassin has given me many great days on Georgia's Chattahoochee and Toccoa rivers as well as on countless other streams across the eastern United States. Yes, it's predominant hue is blue - not what you normally expect to see in a fly. But there is no arguing with the fact that it works really, really well.
I usually tie the fly on size 18 hooks, but I recommend going with size 14 or 16 hooks while you learn.
I think you'll enjoy tying and fishing the Blue Assassin. Meanwhile, if you see Chris Scalley on the river, be sure to thank him for developing this great pattern.
Hook: Curved-shank midge/emerger hook, size 14-20. Straight shank hooks can also be used and may be easier for less experienced tyers.
Bead: Silver tungsten or brass bead to fit hook
Thread: Size 6/0 gray or black
Tail: A few strands pulled from a piece of white Antron yarn
Abdomen: Two or three strands of flash material tied in at bend and wrapped forward. Try pearl, blue, or silver.
Ribbing: Extra fine silver wire wrapped over abdomen (but experiment with other colors)
Thorax: Blue dubbing blend
In the wake of the passing of my wife of 47 years, I've temporarily de-activated the FlyKits.net webstore. However, the books and kits are available from many fly shops. I hope to have the webstore up and running again soon.