hag moth

insect

Also known as: Phobetron pithecium

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Last updated

June 29, 2026

Quick Summary

The hag moth (Phobetron pithecium) is a type of insect belonging to the slug caterpillar moth family (Limacodidae). These moths are named for their slug-like caterpillars, which are found worldwide but are most common in tropical regions.12

Hag moth caterpillars have fleshy appendages covered in stinging hairs that resemble disheveled hair, giving them their name. These appendages are transferred to the outside of the cocoon when the caterpillar pupates, providing camouflage and protection. The adult moths are small and hairy with fringed wings and have a short lifespan as they possess reduced or absent mouthparts. Some species, like the nettle caterpillar, are considered pests on various commercial crops.2

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slug caterpillar moth
Major genera and species
One genus, the hag moths (Phobetron), derives its name from the larva’s fleshy appendages, which are covered with brown stinging hairs resembling disheveled or tousled hair. When the caterpillar spins its cocoon the appendages are transferred to the outside of the cocoon, where they serve for protection and…
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One genus, the hag moths (Phobetron), derives its name from the larva’s fleshy appendages, which are covered with brown stinging hairs resembling disheveled or tousled hair. When the caterpillar spins its cocoon the appendages are transferred to the outside of the cocoon, where they serve for protection and…
Read More