ID#: 12064
Caption:
The swelling and erythema of this patient’s left hand and wrist, was due to a sting from an Io moth, Automeris io, larva. During its developmental stages, or instars, the Io moth larva undergoes changes, becoming a stinging, or urticating caterpillar. The spines on these larvae are extremely sharp, and release their toxin with very little stimulation. Reactions to the toxin range from a stinging pain and swelling, to anaphylactic shock, and death. See PHIL 12067 and 12068 for images depicting this urticating caterpillar.
High Resolution: Click here for hi-resolution image (17.79 MB)
Content Provider(s): CDC/ M.A. Parsons; Cmdr. W.B. Hull
Creation Date: 1961
Photo Credit: R.E. Byrd
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Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.