Category Archives: Lasiocampidae

How to defend yourself

… against fresh fruit.

No, wait a minute. Pointed sticks? No, not that either…

Caterpillars have a variety of methods for defending themselves. When you are a soft squishy tube of yumminess that everything wants to eat, you need to take precautions. As a caterpillar you can be distasteful or toxic, hide with cryptic coloration, or adorn yourself with spines. But you do not have to be passive.

We have seen other caterpillars with nasty big pointy teeth (I’ve been watching too much Monty Python lately, can you tell?) here.

This is a caterpillar I came across doing my field work the other day. It is Hyperaeschra georgica, in the family Notodontidae. I noticed it twitching once I approached. And when I poked at it… well, see for yourself:

I bet that would freak out most birds or predatory insects! It always startles me a little bit when a caterpillar “attacks”, even though I know they cannot really hurt me. Well, some of them do have sharp mandibles and can give a good pinch.

I have also experienced the “look at my warning coloration, don’t eat me if you know what’s good for you” dance of another caterpillar, Phyllodesma americana, in the family Lasiocampidae. The lighting wasn’t very good in the lab, the pale patches on its underside are actually orange. Many insects use the combination of orange and black to warn predators about their distastefulness.

We will try to get a better video of this guy in action soon.

Have you seen any other caterpillar defense displays in the wild or in the lab? What is the strangest thing you have ever seen a caterpillar do? I was just reminded of this caterpillar I saw in Ecuador last year. When I came close, it contorted itself into a strange pose. Hmm.

Lazy moths

Here are some visitors who didn’t have the motivation to fly away from the sheet as daylight approached.
I hope they take off soon… the chickadees have found the buffet.

First is a pretty arctiid – Lophocampa caryae, the hickory tussock moth.
I’m still getting used to all the changes with Arctiidae now being a subfamily and all that…

This one is sneaky… I thought it was some sort of arctiid, but it’s actually a notodontid! Furcula borealis.
(ID thanks to dougeee on flickr)

And an adorable fuzzy lasiocampid, Phyllodesma americana. I love how they hold their wings… hardly looks like a moth at all! And that’s the whole point, I suppose.

Ryerson Lab

Functional Morphology, Sensory Biology, Behavior, Biomechanics

I spell it nature

Trying to make sense of the world through science and language.