Lourenço, W. R., N. O. Aguiar, and E. Franklin. “First Record of the Scorpion Genus Chactas Gervais, 1844, for Brazil With Description of a New Species from Western State of Amazonas (Scorpiones: Chactidae)”. Zootaxa, vol. 984, no. 1, May 2005, pp. 1–8, doi:10.11646/zootaxa.984.1.1.