What's That Bug? does not endorse extermination

Subject: caterpillar with two yellow bumps on back.
Location: ellensburg Washington
June 19, 2012 6:39 pm
I live in Ellensburg Washington, and today I found a caterpillar on a leaf in my apple tree. Its about 1 1/2 inches long with two yellow/orange bumps side by side on its back near its head. It has two antenna kinda has spikes coming from them. And a mouth/ head that looks rough like sand paper. What could this be?
Signature: kari

Lorquin’s Admiral Caterpillar

Dear Kari,
We are very excited to post your photo as it is the only photo we have of the caterpillar of a Lorquin’s Admiral,
Limenitis lorquini.  We matched it to a photo on BugGuide and elsewhere on BugGuide, it states: “Larvae feed on willows, poplars, chokecherry” so we can add apple to that list.  We have a few photos of the adult Lorquin’s Admiral on our site, but again, this is a first for the caterpillar. 

What's That Bug? does not endorse extermination
Location: Washington

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