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The Specimen

The Discussion

GONZOApril 3rd, 2007, 8:53 am
Site Editor
"Bear Swamp," PA

Posts: 1681
From the anal gills and the markings, this appears to be Agnetina--probably capitata.
BoyleMay 7th, 2007, 6:25 pm
Cooperstown, NY

Posts: 2
In case you didn't know, there is an excellent color drawing of Perla capitata, as the species was formerly known, which you can compare to your excellent color photographs. It serves as the frontispiece to Peter W. Claassen's Plecoptera Nymnphs of America North of Mexico (Springfield, Ill: The Thomas Say Foundation, 1931).On page 45 Claassen notes: "...easily recognized by the two dark transverse bands across the head, the two dark trabnsverse bands on the femeora, the presence of caudal gills and the yellow and dark banded abdomen." As with you, Claasssen was at Cornell.

Regards,

RH Boyle, Cooperstown, NY
TroutnutMay 8th, 2007, 8:14 am
Administrator
Bellevue, WA

Posts: 2736
Thanks Boyle, good info!
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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