1 literature reference for Propolydesmus heroldi (Schubart, 1931):

Author: Enghoff, Henrik; Golovatch, Sergei Ilyich
Year: 2003
Title: The millipede genus Propolydesmus Verhoeff, 1895 redefined,with a revision of the genus in the Canary Islands (Diplopoda, Polydesmida, Polydesmidae)
Source: Graellsia, 59 (1): 79-86: 79-86.