Hi Ruth, I checked the sphinx moth section of Caterpillars of Eastern North America by David L. Wagner, and the Galium Sphinx - Hyles gallii looks like a possibility. This is a wonderful caterpillar book. Mary Burnham -----Original Message----- From: Vermont Butterfly Survey [mailto:[log in to unmask]] On Behalf Of C & R STEWART Sent: Tuesday, September 19, 2006 8:34 PM To: [log in to unmask] Subject: caterpillar ID Encountered a long (2" +/-) brown/reddish brown, hairless caterpillar with two rows of yellow spots running down its back. It thought I would be able to easily ID it, but have not with my limited resources. My first thought was one of the spinx moths but now can't remember if it has a horn??? Any ideas? Ruth Charlie & Ruth Stewart E. Dorset, Vermont U.S.A.