Battus philenor - Pipevine swallowtail larva
Northern California, USA
The pipevine swallowtail is a beautiful insect both as a caterpillar and as an adult butterfly. The red markings serve as a warning to predators about the caterpillar's defensive chemistry.
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This image was captured with a Canon EOS D60, with a Canon 65/2.8 MPE 1-5x Macro lens.