Bertani, R. (2001) “ Revision, cladistic analysis, and zoogeography of Vitalius, Nhandu, and Proshapalopus; with notes on other Theraphosine Genera (Araneae, Theraphosidae) ”, Arquivos de Zoologia, 36(3), pp. 265–356. doi:10.11606/issn.2176-7793.v36i3p265-356.