Photographing a Woolcarder Bee in 2006 is what got me started in photographing insects, thus the username.

Links moved to Journal.

Macaria bisignata - Red-headed inchworm - larva photos at bottom of this link.
http://mothphotographersgroup.msstate.edu/species.php?hodges=6342

https://wiki.bugwood.org/Archive:Caterpillars/Macaria_bisignata