I brushed by one of the plants in my yard and got stung by some catepillars that made my skin feel like it was on fire. The main body of the catepillars is green with narrow yellow stripes running the length of the body, with an orange stripe closer to the underneath of it. The body is covered with rows of yellow spikes that looked almost like coral at close magnification. They were around 1″ in length. (Pembroke Pines, FL, USA)
Your caterpillar is the Io moth
caterpillar, one member of the silk moth family – Saturniidae.
They feed on a wide variety of plants including birches, clover, corn, elms, maples, oaks, willows, roses, cotton, hibiscus, azaleas, palms, and even some grasses.
They are not a pest.
The caterpillars stay in clusters early on, but will separate as they mature.
They leave the host plant to form a cocoon, usually in leaf litter. There may be up to four generations in the south, but usually just one in the north.
These insects are found in eastern North America west to AZ.
Caution: The caterpillars may “sting” if handled…or brushed like you learned.
The larger the caterpillar the more intense the stinging sensation caused by the spines. Glad you checked on this one.