Quote Originally Posted by JohnScott View Post
Dennis -

For a definitive answer, you'd probably need entomologists from both continents.

But the question was also about the "closest relative", and that seems to me to be a brown drake.

John
John, thank you, you put the thing on the table. This was absolutely fascinating to me. Yes, I can imagine that the mayflies in US are not exactly like those which we have here, just to compare the most similar of them, if they are. We tie March Browns, Adams, Cahills, etc. etc. and some times making some changes to match the (little!) differences. However, those (your) patterns work excellent tied on the original way.