Fuzzy But Fierce: Watch Out for the Venomous Puss Caterpillar in South Carolina
As South Carolina’s warm weather continues, residents and visitors alike are advised to be cautious of a seemingly innocuous creature that carries a potent sting: the puss caterpillar. Often mistaken for a harmless tuft of fur, this fuzzy larva is one of the most venomous caterpillars in North America, and sightings can occur across the state, including in residential areas and parks.
The puss caterpillar (scientific name: Megalopyge opercularis) is the larva of the southern flannel moth. It’s distinctive for its dense, furry appearance, which can range in color from off-white to gray, brown, and even orange. Beneath this inviting fuzz, however, are numerous short, hollow spines that connect to venom glands.
Contact with these spines can deliver an intensely painful sting, often described as worse than a bee or wasp sting. Symptoms can include severe burning, throbbing pain, redness, swelling, blistering, nausea, vomiting, headaches, and even abdominal pain. The pain typically intensifies for the first few minutes after contact and can last for several hours, with discomfort potentially lingering for days. In some cases, a rash or red marks may persist for weeks.
Puss caterpillars are commonly found feeding on the leaves of a variety of trees and shrubs, including oak, elm, maple, citrus, and various fruit trees. They tend to be more prevalent in late summer and early fall.
What to Do If Stung:
If you come into contact with a puss caterpillar, experts recommend the following steps:
- Remove Spines: Immediately apply adhesive tape (such as scotch tape or duct tape) to the affected area and pull it off. Repeat several times to remove as many embedded spines as possible. Do not rub the area, as this can push the spines deeper.
- Clean the Area: Wash the affected skin thoroughly with soap and water.
- Apply Ice: Use ice packs to reduce pain and swelling.
- Seek Medical Attention: If the pain is severe, symptoms worsen, or if an allergic reaction (such as difficulty breathing, swelling of the face or throat, or dizziness) occurs, seek immediate medical attention. Individuals with known allergies to insect stings should be especially vigilant.
Prevention is Key:
- Educate Children: Teach children not to touch caterpillars or other unfamiliar insects.
- Wear Protective Clothing: When working or playing near trees and shrubs, especially during late summer and fall, consider wearing long sleeves and gloves.
- Inspect Plants: Before reaching into shrubs or picking fruit, visually inspect leaves and branches for any unusual fuzzy growths.
While their furry appearance might make them seem approachable, the puss caterpillar serves as a reminder that some of nature’s most delicate-looking creatures can pack a powerful punch. Staying aware and exercising caution can help you avoid a very unpleasant encounter this season.
NOTE: feature picture is a likeness of the venomous puss caterpillar
