I’ve been shooting images of the swallowtail caterpillar. I don’t touch them or disturb them. But, Mike came to collect some for his garden. Transplant. When I harvested this fellow from the parsley – yes, they eat/love parsley – he sprouted a yellow antenna? It’s probably not an antenna. Wow! I never expected that detail. Surprise! Neat!
“Black swallowtail caterpillar with extended osmeterium. A feature shared by all swallowtail caterpillars, this strange forked protuberance is not found on any other kind of butterfly larva. It has a bad smell and is used to ward off attackers.” http://www.austinbug.com/larvalbugeye/gallery-swallowtail.html