Photo #10739: Lepidoptera sp.

28.09.2011 10:35, Vasiliy Feoktistov

http://lepidoptera.pro/species/hyphantria-cunea/
Feeds on cottonwood too. Young caterpillars live socially in the beginning. So that's the puzzle.
http://natlands.typepad.com/nlt_preserve_blog/2009/08/crows-nest-caterpillars.html
A larger photo of this caterpillar needed.

28.09.2011 9:31, Dmitriy Pozhogin

Phyllodesma americana feeds on cottonwood too. That's all I found in social caterpillars. There is also one Pieridae species that doesn't live on cottonwood though. Does anybody have anything besides?

28.09.2011 9:11, Dmitriy Pozhogin

And why imago??? This is a caterpillar nest.

28.09.2011 9:10, Dmitriy Pozhogin

Definitely not "identified". Let's check it out by whom such constructions can be made. Especially, on cottonwood.

28.09.2011 8:39, Vasiliy Feoktistov

Please, don't.
This is the very cottonwood: http://www.colostate.edu/Dept/CoopExt/4dmg/Trees/cotton.htm. But there are many more species that make nests over there. Rather "uncertain".

28.09.2011 0:35, Peter Khramov

So what, to identified or?

27.09.2011 22:28, Dmitriy Pozhogin

There is only one Lasiocampidae species as for Colorado, Phyllodesma americana.