Pinto-Da-Rocha, R., and O. V. Manzanilla. “Cladistic Analysis of the Stygninae and Description of a New Species of Protimesius Roewer, 1913 (Opiliones: Stygnidae)”. Zootaxa, vol. 2176, no. 1, Aug. 2009, pp. 48–56, doi:10.11646/zootaxa.2176.1.4.