The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
Btbo32 on Oct 27, 2017October 27th, 2017, 2:02 pm EDT
I collected these today on the Big Flatbrook in Sussex County Nj. I would say going by hook size probably 12-14. Not sure what a Maccaffertium is..sorry new at learning all these aquatic insects. Please advise if you could? Thanks for reaching out!
Millcreek on Oct 27, 2017October 27th, 2017, 2:59 pm EDT
Maccaffertium is the name of a heptageniidae (flat-headed) mayfly nymph and adult. The reason I guessed Maccaffertium is because the front leg is fairly wide at the femur and looks to be banded with brown and a whitish color and because it has the general body configuration of a flat-headed nymph. I'm going on guess work as much as anything.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
Wbranch on Oct 29, 2017October 29th, 2017, 3:36 am EDT
Maccaffertium
I thought this was the nymph of the March Brown. BTW Big Flatbrook was my "home" trout stream for about 25 years until I bought a cabin on the Delaware River.