Not a caterpillar...but a larva of the Elm Sawfly. This variety is North America's largest....with a gorgeous blue stripe running down the back with small matching blue dots along both sides of it's body. The adult will be a blackish/purple creature, often mistaken as wasps or even bees. Although I'm not a sawfly fan, these larva are just amazing in their specteral beauty. This one is curled up on the underside of a Hexigonal-pored Polypore fungus. ><><><><><><><><>< Nothing like waking up to see over 1000 clicks on an image. A huge thrill to get a DD on this image. Thank you so much for viewing and enjoying this image...even with the watermark on it! Please know that there is NO way that I can thank each one of you individually for you're 'fav' on this image...but know that each and every one is appreciated!
lol...guilty as charged! people hate hiking with me because i can take 50 shots of one item to 'study' it...then stop 5 feet further away..and start all over. what SHOULD have been a 1/2 hour hike turns into 3 hours for me because of all the shots i take.