What specifically causes significant discomfort and allergic reactions upon physical contact with spongy moth larvae?

Answer

The tiny, bristly hairs covering the larvae

The physical presence of the tiny, bristly hairs covering the larvae can cause significant discomfort and allergic reactions, resulting in a bothersome rash characterized by itching and raised bumps.

What specifically causes significant discomfort and allergic reactions upon physical contact with spongy moth larvae?

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