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> > Probably Acroneuria lycorias

The Specimen

The Discussion

GONZOOctober 10th, 2006, 6:08 pm
Site Editor
"Bear Swamp," PA

Posts: 1681
I've been staring at this one for quite some time. My first impression was lycorias (Boreal Stone, Giant Brown Stonefly). I'm pretty familiar with this species, but I don't know of a good key to Acroneuria at the species level.

The lack of a row of spinules along the occiput of the head and presence of postocular and pronotal fringes all say Acroneuria for sure.
GONZOOctober 28th, 2008, 10:34 am
Site Editor
"Bear Swamp," PA

Posts: 1681
Jason, I now think that this is probably abnormis rather than lycorias.

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