Pink individuals of the katydid species Amblycorypha oblongifolia are a relatively uncommon but natural phenomenon with a long history of research.

It looks from popular press accounts (Science Friday, Scientific American) that the pink coloration may be caused by a dominant allele (!), and is only rare because of a high selection pressure against pink individuals (i.e. they're much less good at hiding among leaves, and are eaten before they can reproduce).

Pink individuals of the katydid species Amblycorypha oblongifolia are a relatively uncommon but natural phenomenon with a long history of research.

It looks from popular press accounts (Science Friday, Scientific American) that the pink coloration may be caused by a dominant allele, and is only rare because of a high selection pressure against pink individuals (i.e. they're much less good at hiding among leaves, and are eaten before they can reproduce).

Photo by Richard Whitby, via flickr.com/blueboat2 (cc-by-sa 2.0)

Pink katydids are a relatively uncommon but natural phenomenon with a long history of research

It looks from popular press accounts (Science Friday, Scientific American) that the pink coloration may be caused by a dominant allele (!), and is only rare because of a high selection pressure against pink individuals (i.e. they're much less good at hiding among leaves, and are eaten before they can reproduce).

Pink individuals of the katydid species Amblycorypha oblongifolia are a relatively uncommon but natural phenomenon with a long history of research.

It looks from popular press accounts (Science Friday, Scientific American) that the pink coloration may be caused by a dominant allele (!), and is only rare because of a high selection pressure against pink individuals (i.e. they're much less good at hiding among leaves, and are eaten before they can reproduce).