WILLIAMS, Paul H.; DORJI, Phurpa; REN, Zongxin; XIE, Zhenghua; ORR, Michael. Bumblebees of the hypnorum-complex world-wide including two new near-cryptic species (Hymenoptera: Apidae). European Journal of Taxonomy, [S. l.], v. 847, n. 1, p. 46–72, 2022. DOI: 10.5852/ejt.2022.847.1981. Disponível em: https://ejt.sandbox.publicknowledgeproject.org/index.php/ejt/article/view/1981. Acesso em: 24 apr. 2026.