original description
(of Spirostreptus angustifrons Brölemann, 1902) Brölemann, H. W. (1902). Myriapodes du Musée de Sao Paulo. Revista do Museu Paulista, 5: 35-237, available online at https://www.biodiversitylibrary.org/page/10803013
page(s): 178-180; note: Spirostreptus (Cladostreptus) angustifrons [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): 189, 217; note: Epistreptus (Epistreptus) angustifrons [details] Available for editors
From editor or global species database