original descriptionChamberlin, R. V. (1943). On Mexican Millipeds. Bulletin of the University of Utah, Biological series, 8(3): 1-103 page(s): 16, figs. 16-17 [details]
additional sourceCausey, N. B. (1964). New North and Central American records of Orthoporus. Proceedings of the Biological Society of Washington, 77: 175-182 page(s): 177; note: Junior synonym of Orthoporus fraternus [details]