The Bordered Patch is an abundant, widespread, and highly variable species with a number of strikingly different caterpillar forms . . .
http://www.nature.com/hdy/journal/v26/n1/pdf/hdy19717a.pdf
(my personal favorite being the relatively rare "rufa" – http://www.treknature.com/gallery/South_America/Bolivia/photo51535.htm).
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