PENZ, C. M. The phylogeny of Opoptera butterflies, and an assessment of the systematic position of O. staudingeri (Lepidoptera, Nymphalidae). Zootaxa, Auckland, New Zealand, v. 1985, n. 1, p. 1–20, 2009. DOI: 10.11646/zootaxa.1985.1.1. Disponível em: https://mapress.com/zt/article/view/zootaxa.1985.1.1. Acesso em: 7 apr. 2025.