First discovered back in 1887, the pink katydid is so rare that they occur once out of every 500 individuals. You have a better chance of spotting a unicorn in the wild.
Of course, the color pink alone isn't very common to the animal kingdom, flamingos aside. It's the result of a condition called erythrism, similar to the recessive gene that afflicts albino animals.
Source: treehugger
Very Rare Pink Katydid
