original descriptionSilvestri, F. (1910). Descrizioni preliminari di novi generi di Diplopodi. Zoologischer Anzeiger, 35(12-13): 357-364. Jena, available online athttps://biodiversitylibrary.org/page/9741798 page(s): 364 [details]
additional sourceShelley, R. M. (1994). The milliped family Nearctodesmidae in northwestern North America, with accounts of Sakophallus and S. simplex Chamberlin (Polydesmida). Canadian Journal of Zoology, 72(3): 470-495[details]
additional sourceShear, William Albert; Reddell, James M. (2017). Cave millipedes of the United States. XIV. Revalidation of the genus Speorthus Chamberlin, 1952 (Diplopoda, Polydesmida, Macrosternodesmidae), with a description of a new species from Texas and remarks on the families Polydesmidae and Macrosternodesmidae in North America. Insecta Mundi, 0529: 1-13 page(s): 6; note: Listed in subfamily Nearctodesminae [details]