original description
(of Gymnostreptus vagans Chamberlin, 1922) 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 at https://doi.org/10.5479/si.00963801.60-2403.1
page(s): 13-14, pl. 6, fig. 10, pl. 7, fig. 1 [details]
additional source
Kraus, O. (1954). Myriapoden aus El Salvador. Senckenbergiana biologica, 35(5-6): 293-349. Frankfurt am Main
page(s): 340, pl. 31, fig. 84, pl. 32, figs. 85-86 [details]
new combination reference
Attems, C. M. T. Graf von. (1950). Über Spirostreptiden (Diplopoda). <em>Annalen des Naturhistorischen Museums in Wien.</em> 57: 179-257.
page(s): 218, 220; note: Epistreptus (Microtrullius) vagans [details] Available for editors 
From editor or global species database