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Photo#124490
Viceroy or Red-spotted Purple? - Limenitis archippus

Viceroy or Red-spotted Purple? - Limenitis archippus
Medina County, Ohio, USA
July 5, 2007
found on willow.

I have a hard time telling the two apart, is there key ways to determine which species is which?

Moved
Moved from Viceroy.

Viceroy
Hello, this larva is the Viceroy.Willow is a favorite of this species. The Red-Spotted Purple feeds mostly on Cherry, Oak and Poplar. Also The spine clusters on t2,a2,a7, and a8 are smaller on the Red-Spotted. See the Princeton Field Guide Caterpillars of Eastern North America pg.130 Great photo.

 
viceroy
thanks for all the info!

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