Lewis, J. G. E. “A Revision of the rugulosus group of Otostigmus subgenus Otostigmus Porat, 1876 (Chilopoda: Scolopendromorpha: Scolopendridae)”. Zootaxa, vol. 2579, no. 1, Aug. 2010, pp. 1–29, doi:10.11646/zootaxa.2579.1.1.