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Btbo32October 27th, 2017, 11:48 am
Posts: 13Would anyone happen to know what kind of nymph these could be?
Jersey Boy
MillcreekOctober 27th, 2017, 3:26 pm
Healdsburg, CA

Posts: 356
My guess and it's only a guess would be Maccaffertium. When were they collected, what size were they and where were they collected?
Btbo32October 27th, 2017, 6:02 pm
Posts: 13I 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!
Jersey Boy
Btbo32October 27th, 2017, 6:42 pm
Posts: 13I think you were correct ( Cream Cahill nymph)
Thank you!
Jersey Boy
Btbo32October 27th, 2017, 6:58 pm
Posts: 13Anyone have an idea of a good imitation fly pattern this nymph?
Jersey Boy
MillcreekOctober 27th, 2017, 6:59 pm
Healdsburg, CA

Posts: 356
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.
WbranchOctober 29th, 2017, 7:36 am
York & Starlight PA

Posts: 2733

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.
Catskill fly fisher for fifty-five years.
Btbo32November 4th, 2017, 4:01 pm
Posts: 13March Brown? Wow great! Thanks.
Jersey Boy

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