What Type Of Caterpillar Is this
 

Hiking on the mountain last weekend and this morning I have run across this Caterpillar, It pretty big the size of a mans pinkie finger. Location Bridger Mountain Range Bozeman Montana.

WTF is it?

What type of flying insect does it turn in to Big Moth?

Colorful Dude



http://forums.pelicanparts.com/uploa...1248664569.jpg
http://forums.pelicanparts.com/uploa...1248664623.jpg

Don't eat it - bitter as hell!

What is that red and black thing on top.
A colorful organ indeed... He's sure to impress the ladies with that one;

Looks like this one.

http://en.wikipedia.org/wiki/Spurge_Hawk-moth

I think it's a D2, but it should be yellow.