original description
Porat, C. O. von (1893). Myriopoder fran Vest- och Syd-Afrika. Kongl. Svenska Vetenskaps-Akademiens handlingar, Bihang, 18(7): 1-51, available online at https://biodiversitylibrary.org/page/13446960
page(s): 44 [details]
additional source
Mbenoun Massé, P. S. (2023). An annotated checklist of the Millipedes (Myriapoda Diplopoda) of Cameroon, with several new species and distribution records. <em>Biodiversity Journal.</em> 14(2): 275-291., available online at https://www.biodiversityjournal.com/images/pubblicazioni/biodiversity-journal-2023/biodiversity-journal-2023-14-02/biodiversity-journal-2023-14-02_275-291.pdf
page(s): 280; note: Listed as Urotropis porathi Demange, 1973 with taxon S. propinquus as original name [details]
additional source
Demange, J.-M. (1973). Contribution à la connaissance du genre Urotropis Silvestri, 1896. Bollettino del Laboratorio di entomologia agraria "Filippo Silvestri", 30: 244-252
page(s): 248 [details]
additional source
Porat, C. O. von (1894). Zur Myriopodenfauna Kameruns. Kongl. Svenska Vetenskaps-Akademiens handlingar, Bihang, 20(5): 3-89. Stockholm, available online at https://biodiversitylibrary.org/page/14232226
page(s): 76-77, figs. 42-42f [details]
From editor or global species database
Original description p. 44 Spirostreptus propinquus Porat, 1893
p. 76 Spirostreptus propinquus Porat, 1893
p. 77 Spirostreptus propinquus Porat, 1893
figs. 42-42f Spirostreptus propinquus Porat, 1893