Chamberlin, R. V. (1922). The millipeds of Central America. Proceedings of the United States National Museum, 60(2403): 1-75. Washington D.C., available online athttps://www.biodiversitylibrary.org/page/7527837 page(s): 9, pI. 3 fig. 5 - 7, pI. 4 fig. Progreso (1). 1 - 2 [details]
original descriptionChamberlin, R. V. (1922). The millipeds of Central America. Proceedings of the United States National Museum, 60(2403): 1-75. Washington D.C., available online athttps://www.biodiversitylibrary.org/page/7527837 page(s): 9, pI. 3 fig. 5 - 7, pI. 4 fig. Progreso (1). 1 - 2 [details]