ZWICK, P. Australian Marsh Beetles (Coleoptera: Scirtidae). 6. Genera Calvarium Pic, Papuacyphon Zwick, and Ypsiloncyphon Klausnitzer. Zootaxa, Auckland, New Zealand, v. 3846, n. 1, p. 1–41, 2014. DOI: 10.11646/zootaxa.3846.1.1. Disponível em: https://mapress.com/zt/article/view/zootaxa.3846.1.1. Acesso em: 30 apr. 2025.