Benedetti, A. R., & Pinto-Da-Rocha, R. (2019).

Description of two new species of Progonyleptoidellus (Opiliones: Gonyleptidae), with a cladistic analysis of the genus, an overview of relationships in the K92 group, and taxonomic notes on Deltaspidium

. Zootaxa, 4691(5), 461–490. https://doi.org/10.11646/zootaxa.4691.5.3