Caterpillar Countdown

Beauty can come in strange forms.

~James Dyson

I thought about not saying anything else in this post other than the quote above, because it really does sum up what we found one night this week. Yes, it is that time of year again when we caterpillar-lovers are out and about searching for something cool, something bizarre, something strange and beautiful. Melissa and I both have caterpillar programs today and then next weekend is the annual BugFest celebration at the NC Museum of Natural Sciences, where, once again, we will host a caterpillar booth. So, bear with me as I will no doubt share a few lovely larva images over the next couple of weeks.

We often find our best specimens at night, either by regular flashlight or UV flashlight (many species glow in UV light). And so it was Thursday night…some fine specimens indeed…

Black-blotched Schizura

Black-blotched Schizura (click photos to enlarge)

The Schizura group are some of the leaf edge caterpillars – they chew out a section of leaf and then position their body within that section. The strange protuberances of the caterpillar’s body help disguise it by blending in with the jagged edges of the leaf blade.

Crowned slug

Crowned Slug

One of my favorites, the Crowned Slug, looks like an alien creature. They, like many of the slug caterpillars, are difficult to find because they tend to feed on the undersides of tree leaves (plus, they blend in). These are best located with a UV flashlight.

The highlight of the evening was a species that I have wanted to find for several years. Being a true caterpillar nerd, I have poured over my copy of Wagner’s field guide countless times since it first came out, and been amazed at some of the bizarre larvae that can be found in our area. There are several that were on my “larval bucket list” and it is always a thrill to find one. For this species, I have seen the tiny moth a few times at home and at work, so I knew they were around.

Spun glass slug moth 1, Isochaetes beutenmuelleri

The strange-looking Spun Glass Slug Moth

And this week, I finally found the exquisite larva (with the aid of a UV flashlight).

Spun Glass Slug

Spun Glass Slug

This is the last instar of this translucent little beauty. It was found underneath an oak leaf (various oaks and American beech are the host plants). It is one of the so-called stinging caterpillars (tufts of spines that can inject venom if touched). Apparently, when it gets ready to pupate, the numerous “arms” fall off.

Spun glass slug close up

A closer look

Of course, now I want to find some of the earlier instars. I guess it is good to have goals in your life…

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