The West has their Pale Morning Duns and we here in Maine have our Pale Evening Duns. Pretty similar mayflies both being smaller than Hendricksons and both having a yellowish tint to the body. The male Evening Duns have large reddish eyes. I don’t believe that’s the case with the Morning Duns.
I hate to see this hatch because it means the Hendricksons are waning and the water is warming. But, be that as it may the good part of it all is that the fish have started to rise again.
When the Hendrickson hatch starts it seems the fish spend the first half of the two weeks or so that they hatch feeding sub-surface. I guess they have to relearn surface feeding. Who knows. However, after a fashion they do start surface feeding but, usually, by the time they do the hatch has peaked and is falling off.
But Pale Evening Duns to the rescue – they start up and give the trout a reason to keep looking up.