Stinging Caterpillars


Hazards of the Outdoors
Written by Terry Price, Georgia Forestry Commission
Adapted for the web by the Bugwood Network


Some common stinging caterpillars are the saddleback, tussock moth, puss moth, hag moth, Io moth, Isa moth, and spiny oak slug (Figures 34-40). All feed on the leaves of various trees and shrubs between March and September and are capable of causing severe reactions in certain people.

Saddleback caterpillar
Figure 34 - Saddleback caterpillar
Photo by Center for Disease Control Archives, Centers for Disease Control and Prevention
Whitemarked tussock moth
Figure 35 - Whitemarked tussock moth
Photo by James Solomon, USDA Forest Service


The caterpillars are equipped with stinging spines located over their bodies. Each spine is connected to a poison gland that injects venom when touched. Children should be taught not to handle caterpillars unless they are recognized as harmless species. Wearing long-sleeved shirts and long pants will prevent many brushes with these caterpillars while pruning trees and shrubbery or just taking a stroll through the woods.


Puss Caterpillar
Figure 36 - Puss Caterpillar
Photo by James Solomon, USDA Forest Service
Hag moth
Figure 37 - Hag moth
Photo by Jerry A. Payne, USDA Agricultural Research Service


Io moth
Figure 38 - Io moth
Photo by Center for Disease Control Archives, Centers for Disease Control and Prevention
Spiny oak slug
Figure 39 - Spiny oak slug
Photo by Jerry A. Payne, USDA Agricultural Research Service


Crowned slug
Figure 40 - Crowned slug
Photo by Beverly Sparks, The University of Georgia

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