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American Dagger Moth caterpillar

Acronicta americana


The young caterpillar is densely covered with yellow setae. The older caterpillar's setae are either pale yellow or white. All instars have thin, black setae on the first and third abdominal segments. On the eight abdominal segment, there is one tuft of black setae. The caterpillar will reach a length 50 mm.


urban garden


I spotted this walking on some grass near the road in front of Oak Hall under a huge maple tree. Perhaps it fell out of the tree?

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dandoucette 8 years ago

Thanks Mayra

MayraSpringmann 8 years ago


dandoucette 9 years ago

That's great to hear, that you've been searching already, thanks. These ones might be really hard to ID.

AmberLundeen 9 years ago

I've actually been looking for some of these but as of yet haven't come up with anything - I'll keep searching though

dandoucette 9 years ago

Amber, you've been a great help on ID'ing some of my insects. I'd be curious if you have any ideas for these unknown caterpillars from outside of N. America. Whenever you have time, I appreciate any help.

dandoucette 9 years ago

That's it, thanks Amber.

alicelongmartin 9 years ago

What a disguise it has! Cool!

AmberLundeen 9 years ago

Looks like an American Dagger Moth

Spotted by

Niagara Falls, Ontario, Ontario, Canada

Spotted on Aug 12, 2011
Submitted on Aug 12, 2011

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