Caterpillars hide and have camouflage, or they collect poisons from the plants they eat and hold them in their bodies. Poisonous caterpillars sometimes stay together in groups, and excrete toxic chemicals on any predators that attack them. If they are attacked they thrash around and try to bite their attacker, or play dead and drop to the ground. Some moth caterpillars have "safety lines" of silk: they drop down and hang on their silk line, then crawl back up after the predator is gone. Others build "tents" or hiding places from their silk, and stay inside when they are not eating.
Adult butterflies rely on camouflage and flight to avoid predators, and some (swallowtails and monarchs especially) are poisonous to predators. Some moths have ears that let them hear the sonar calls of bats. When they hear a Chiroptera, they quickly drop to the ground to get away. One family of moths have mostly clear wings and look like wasps, they fly in the daylight and act like stinging insects to fool their predators.
- Aves, especially perching birds
- Sigmodontinae (eat pupae)
- Mephitis mephitis (eat pupae)
- Araneae, especially crab spiders and orb-weavers (eat adults)
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