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When perched, Pipevine Swallowtails look much like other swallowtails with the distinctive orange spots on the undersides of their wings. |
| However, unlike other swallowtails, the uppersides of their wings typically appear dark. |  |
| When the sunlight strikes them at the right angle, the blue iridescent scales make Pipevine Swallowtails easy to identify. |  |
