Vivallo, Felipe. “The Species of the Bee Genus Centris of the ‘hyptidis group’ Revisited With the Description of Centris (Anisoctenodes) New Subgenus (Hymenoptera: Apidae: Centridini)”. European Journal of Taxonomy, no. 709 (August 27, 2020). Accessed April 20, 2024. https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/1077.