Lewis, J. G. E. (2015). On Verhoeff's Otostigmus subgenus Malaccopleurus, the nudus group of Otostigmus subgenus Otostigmus Porat, 1876, and Digitipes Attems, 1930, with a description of the foetus stadium larva in O. sulcipes Verhoeff, 1937, (Chilopoda: Scolopendromorpha: Scolopendridae). Zootaxa. 4039(2): 225-248.
On Verhoeff's <em>Otostigmus</em> subgenus <em>Malaccopleurus</em>, the <em>nudus</em> group of <em>Otostigmus</em> subgenus <em>Otostigmus</em> Porat, 1876, and <em>Digitipes</em> Attems, 1930, with a description of the foetus stadium larva in <em>O. sulcipes</em> Verhoeff, 1937, (Chilopoda: Scolopendromorpha: Scolopendridae)