
I used a Mustad 3906 hook, size 18 to copy the hook as best I could.

Normally on flies smaller than this I use mole as the collar if I am tying them to mimic midges.
It took a couple trys to get the hackle length correct.
Moderators: William Anderson, letumgo
Being that it is tailless, I am tying and fishing it as a midge. Just before the Mothers Day Caddis appears on the rivers I fish, a midge hatch comes off. maybe 30 to 14 days prior. The midges are rather large. Perhaps as big as an 18. Some are Black, some are Gray, and others are a combination of both. At its peak, the back eddies look like a grotesque oil slick because of all the midge shucks. Those big, Gray midges could be viewed as an Iron Blue. That is a wild guess on my part.redietz wrote: ↑Fri Sep 13, 2019 1:53 pm It's a fly I tie and fish a lot. As you say, it's a good midge imitation. Nice to see somebody else's interpretation.
I've often wondered what insect Leisenring was referring to when he called it an Iron Blue. Yes, I know it's the name of the English pattern he was copying, but he mentioned that it (either the nymph or the wingless wet -- I don't remember which) was especially good when there were iron blues on the water. We don't have the British fly of that name in this country. I'm guessing blue quills,but I don't know for sure. I've had the most success with the pattern in a stream that doesn't have blue quills, though.