Bellés i Ros, X. “Description of Sphaericus Selvagensis N. Sp. From the Salvage Islands, and New Data on Sphaericus Bicolor Bellés (Coleoptera, Ptinidae)”. Animal Biodiversity and Conservation, vol. 24, no. 1, Apr. 2007, pp. 9-13, https://raco.cat/index.php/ABC/article/view/57569.