close up black swallowtail caterpillar face body blurred for effect - papilio polyxenes

absorbs american bird black blurred body called caterpillar close closeupswallowtail danger eastern effect effect2 everts face forked foul gland has host looks orange osmeterium papilio parsnip plants polyxenes poor predators predatorsn releases repel smell snakes swallowtail tastes therefore this tongue toxins when which