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Photo#636267
green caterpillar - Limenitis archippus

green caterpillar - Limenitis archippus
South Boulder Creek, Boulder County, Colorado, USA
May 2, 2012
Size: 5 cm

When I was in grade school
[centuries ago], I lived along South Boulder Creek, and there lots of Viceroys - used the Willows as host plants. Occasionally there were Weidemeyer's Admirals, but I think this is a Viceroy caterpillar. The creek is very very very different from back in the 60's now, but the willows and Viceroys I think are still there.

Moved from Butterflies (excluding skippers).

Moved
Moved from ID Request.

Something in Limenitis
In the guide here. Click on Caterpillars

 
Oh! Thank you. Followed your
Oh! Thank you. Followed your lead - might be the caterpillar of a western white admiral. Feeding on a willow-type shrub, which is very abundant along sections of this creek.

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