Megalopyge opercularis is a moth of the family Megalopygidae. It has numerous common names, including southern flannel moth for its adult form, and puss caterpillar, asp, Italian asp, fire caterpillar, …

In Texas these caterpillars are commonly known as “asps”. This caterpillar is often abundant and may infest shade trees and shrubbery around homes, schools, and in parks. They are of minor …

Jul 13, 2023 · Asp caterpillars spend most of their time innocently crawling along the branches of oak and elm trees in North America. But when these hairy creatures come into contact with humans, they …

Puss moth caterpillars (Megalopyge opercularis), of the order Lepidoptera, are also known as asps. They are one of the most toxic caterpillars in North America. Puss moth caterpillars are endemic to …

Nov 24, 2025 · Texans are entering the time of year when one of the region’s most visually striking, yet venomous, insect is most abundant: the puss moth caterpillar, commonly known as the “asp.”

Apr 6, 2020 · Despite their harmless-looking appearance, asp caterpillars, or Megalopyge opercularis, are considered North America's most venomous caterpillar species.

Jan 8, 2026 · Identify the venomous Asp Caterpillar, the larval stage of the Puss Moth. Understand its toxic appearance, life cycle, and critical sting treatment.

May 8, 2023 · Puss caterpillars, Megalopyge opercularis, are also called asp caterpillars because of their potent stings. They are called puss caterpillars because their thick, fluffy setae resemble the fur …

Feb 25, 2025 · An asp caterpillar is a type of caterpillar that can be found in various regions of the world, including North America. They are known for their venomous spines, which can cause skin irritation …