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.