Category: moths (Page 8 of 30)

Bug of the Week: Lone Armyworm

While I was out for my morning walk, I found a caterpillar on the sidewalk.

The vibrant yellow lines on its back caught my eye. In the sun they look almost like gold leaf.

The larva was quite still, probably because it was in the 40s this morning.

It was still alive and began to crawl once I’d warmed it in my hand.

It is an armyworm, possibly a yellow-stiped armyworm given the yellow. If it completes its life cycle, it turn into an owlet moth (Family Noctuidae).

Armyworms get their name from the fact that they can migrate in large groups (armies). This one was a lone soldier.

Bug of the Week: Datura Hornworm

The Datura had a lovely flower this morning.

Sometimes called moonflowers, they open at night and close by mid-morning.

Hum, something seems to have been chewing on the leaves.

A few ants were running around on the top of the leaves, but I don’t think they are the culprits.

It’s a young hornworm caterpillar.


You can tell it is young because of the relative length of the “horn.”

Yesterday we looked at a children’s book about cute animals. So, are young hornworms cute or not?

Bug of the Week: Ailanthus Webworm

Just when we thought we were done with moths, we found an orange, black, and white beauty feeding on a Queen Anne’s lace flower in western New York. It almost looks as lacy as the flower.


With the striking coloration, it didn’t take long to figure out it is an ailanthus webworm moth, Atteva aurea.

These moths were thought to be native to Florida, where they feed on paradise trees, Simarouba glauca and S. amara. The introduced Tree of Heaven (Ailanthus altissima) can also serve as a host plant. When the Tree of Heaven began to spread throughout the U.S., the ailanthus webworm did, too.

The caterpillars are called webworms because of the silk they produce while feeding. You can see them in action in this video.

Many of the caterpillars in the ermine moth family (Yponomeutidae) build webbed nests like this.

It turns out these little moths are ideal models, probably because their orange and black colors are a warning pattern. The one in the photo was not fazed by my attention, probably because not much tries to eat them. What a cool little moth.

Have you discovered any interesting moths this week?

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