Figure 3From: Q&A: What did Charles Darwin prove?Monarch butterflies (Danaus plexippus) are poisonous and distasteful; this is advertised to potential predators by brightly colored wings. Photograph by Derek Ramsey, reproduced under GFDL 1.2 http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License.Back to article page