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Unknown Insect - Can you ID it?

Unknown Insect - Can you ID it?
Berlin, Washington County, Vermont, USA
April 27, 2009
Size: 1 to 1.5 inchess approx.
We've had unusually warm weather here for a few days so I thought I might see some insects that were fooled into thinking that summer was here. But I didn't expect to see anything like this critter.
Taken in Berlin, Vermont on April 27, 2009 around 12:30 PM. This insect was resting on a brick ledge outside our office windows (ground floor offices).

Moved from Stoneflies.

Stonefly, probably from the Dog River (Perlidae?)
This looks very much like Agnetina capitata, but it might require a closeup of the last few abdominal segments to be sure (dorsal view for males and ventral view for females). Although it is very early for that species, the emergence of a few of the most mature nymphs may have been forced by the unusually warm weather.

This is a stonefly (order Plecoptera), but not sure beyond that. They are aquatic in the nymph (naiad) stage, in streams and rivers.

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