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?
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.