On Nov 11, 2012, KanapahaLEW from Alachua, FL (Zone 8b) wrote:
This is apparently an unremarkable brownish moth. I haven't seen the adult but came upon a large (30-40) cluster of approximately 3/4"-long caterpillars somewhat lined up in ranks and files on the leafless lower part of a mature Smilax (greenbrier) vine in dense woods. When I went back the following day to take a picture I could only find the single specimen in the photo. It is reported to range up and down the East Coast from NY to Florida and west to Illinois and Texas. Smilax is the host plant.