[3] The zoologist Luis Alberto Pereira first described this species in 1984, based on five specimens collected near Puerto Iguazu, close to the Paraná river, in the Missiones province of Argentina.

These specimens were found in soil rich with humus, with leaf litter and abundant roots from jungle vegetation.

[4] Since the original description of D. oligopodus, Pereira and three biologists from the University of Padua (Lucio Bonato, Alessandro Minelli, and Leandro Drago) examined seven more specimens (two males and five females) collected from La Plata in Argentina.

For example, both species have a single lamella on each mandible, second maxillae that are flattened and rounded at the distal end, incomplete chitin-lines on the sternum of the forcipular segment, forcipules with denticles along the intermediate part of the ultimate article, and a telson without anal pores.

Using new specimens collected by Pereira, scanning electron microscopy, and molecular data, Bonato and his colleagues placed this genus in the family Schendylidae instead.