original description
(of Spirostreptus servatius Attems, 1914) Attems, C. M. T. Graf von. (1914). Afrikanische Spirostreptiden nebst Überblick über die Spirostreptiden orbis terrarum. <em>Zoologica (Stuttgart).</em> 25(65-66): 1-235. Stuttgart., available online at https://www.zobodat.at/pdf/Zoologica_25_65-66_0001-0233.pdf, https://www.biodiversitylibrary.org/page/10232973
page(s): 72-73, pl. 1, figs. 20-22; note: Spirostreptus (Macrolenostreptus) servatius. As S.serratus [lapsus] on pl. 1 for figs. 20-22. [details] 
original description
(of Spirostreptus serratus Attems, 1914) Attems, C. M. T. Graf von. (1914). Afrikanische Spirostreptiden nebst Überblick über die Spirostreptiden orbis terrarum. <em>Zoologica (Stuttgart).</em> 25(65-66): 1-235. Stuttgart., available online at https://www.zobodat.at/pdf/Zoologica_25_65-66_0001-0233.pdf, https://www.biodiversitylibrary.org/page/10232973
page(s): plate 1; note: S. serratus mentioned on plate 1 for figs. 20-22 istead of S. servatius [details] 
new combination reference
Enghoff, H. (2023). A new distinct, disjunct giant millipede of the genus <em>Spirostreptus</em> Brandt, 1833, from Tanzania, and a solution for orphaned <em>Spirostreptus</em> species (Diplopoda, Spirostreptida, Spirostreptidae). <em>Zootaxa.</em> 5389(2): 275-287., available online at https://doi.org/10.11646/zootaxa.5389.2.9
page(s): 283, table 1; note: Analocostreptus servatius (Attems, 1914), comb. nov. [details]
From editor or global species database
Original description p. 72 Spirostreptus servatius Attems, 1914
Original description p. 73 Spirostreptus servatius Attems, 1914
Original description figs. 20-22 Spirostreptus servatius Attems, 1914