Defensive posture

The Specimen

View 3 PicturesPteronarcys nymphs live for two years before maturing. This small one is in its first year.

Collected March 10, 2004 from unknown in Wisconsin
Added to Troutnut.com by on January 19, 2006

Shawnny3	June 29th, 2008, 4:33 pm
Moderator Pleasant Gap, PA Posts: 1197	Is Pteronarcys the one that curls into a fetal position when disturbed? I don't see any pictures like that in this section, but I'm pretty sure a stone I saw do that today was one of these. -Shawn
	Jewelry-Quality Artistic Salmon Flies, by Shawn Davis www.davisflydesigns.com

GONZO	June 29th, 2008, 5:58 pm
Site Editor "Bear Swamp," PA Posts: 1681	Hi Shawn, Yes. A few other stoneflies will do that as well, but it is so characteristic of Pteronarcys that they are sometimes called "curlers."

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