Pellucid Hawk Moth Caterpillar

Thanks Dave, I know the ID because I've seen the moth of this caterpillar in my garden and I've searched the ID for my spotting before that, http://www.projectnoah.org/spottings/23159133

Good job Jason :) Dave

hecabe contubernalis - Common Grass Yellow is close. Might give you a lead. Your title needs editing :) Dave