ID#: 12065
Caption:
Note the swelling and erythema of the left hand and wrist, when compared to the right, brought on by the 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 (17.8 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: Permission is not required for public domain images, however, these images are provided by CDC and are available for personal, professional, and educational use with appropriate attribution. Redistribution must credit CDC and, where known, the individual photographer, and identify the CDC website as the free source. For additional terms see Use of Agency Materials | Other | CDC