de Sena Oliveira, I., A. H. Wieloch, and G. Mayer. “Revised Taxonomy and Redescription of Two Species of the Peripatidae (Onychophora) from Brazil: A Step towards Consistent Terminology of Morphological Characters”. Zootaxa, vol. 2493, no. 1, June 2010, pp. 16–34, doi:10.11646/zootaxa.2493.1.2.