Flannel moths

The flannel moths or crinkled flannel moths (scientific name Megalopygidae) are a family of insects. They occur in North America (11 species) and the New World tropics. The larvae are called puss s, and with their long hairs, resemble cotton balls. They have venomous spines that can cause a painful sting and inflammation lasting for several days. In some cases, the sting may cause headache, nausea, and -like symptoms. Perhaps the most notorious for stinging is the caterpillar of .