Shiraiwa, Kojiro, and Nick V. Grishin. “Welcome Back Mr. Rudkin: Differentiating Papilio zelicaon and Papilio polyxenes In Southern California (Lepidoptera: Papilionidae)”. Zootaxa 4877, no. 3 (November 11, 2020): 422–428. Accessed April 21, 2025. https://mapress.com/zt/article/view/zootaxa.4877.3.3.