Help identifying this Mayfly

[Jlafko3]

Hey all, I forgot that I had this picture still so I figured I would post for some help. I found this little guy back in April and was perplexed because I could t figure out what kind of bug it was. Any help is appreciated! It is the little red mayfly. I asked a lot of people and no one could tell me for sure what it is.

 

[NewSal]

Serratella tibialis (red quill) ?? maybe??

 

[NewSal]

Did you post on the troutnut forum?

 

[afishinado]

Looks like a Hendrickson. When they emerge the hendrickson is a reddish-pink color and later darkens. The nymph shuck from it's emergence is right beside it on the left.

 

[JackM]

I don't see wings, nor a prominent wing-case on the bright red specimen. Perhaps it is an instar.

 

[NewSal]

If thats the bugs shuck then that really is a neat picture.

Nice theory Afish, but I dont see wings either, and why would a dun be sitting on a rock on the bottom of a river?

 

[Jlafko3]

Thanks for helping guys. Yeah this bug was under water beneath that rock. And also, the one next to it was not a shuck. It was a separate bug.

 

[Dave_W]

Hhhmm....

Beats me. I look at a lot of nymphs under rocks here in PA and I've never seen anything like this.

 

[MKern]

My guess would be a freshly molted nymph. That's why pink works.