Serrano, A. R. M., and C. A. S. Aguiar. “Two New Species of the Genus Geocharis Ehlers, 1883 and New Data on Anillina Species from Portugal (Coleoptera: Carabidae)”. Zootaxa, vol. 3116, no. 1, Dec. 2011, pp. 33–46, doi:10.11646/zootaxa.3116.1.2.