|Nom nom nom. poop. Nom nom nom. poop (Lifestyle of the average caterpillar)|
They're grew to be big caterpillars: I could feel their weight when they crawled on my hand. Beautifully colored as larvae, they metamorphose into a pretty interesting critter, too.
Hemaris caterpillars become Hemaris moths, a.k.a. Clearwing moths, a.a.k.a. Bumblebee moths. They buzz around plants with their transparent wings, sipping nectar while pretending mightily that they are Dangerous Bees with Very Large Sharp Stingers, so you should Certainly Leave Them Alone.
I was reminded of my caterpillar friends and their honeysuckle buffet when I spotted an adult this afternoon, drinking from a patch of henbit.
I hope this means that there will be more Hemaris caterpillars this year. I'll keep an eye out.