Tylobolus uncigerus (Wood, 1864)

John Hollier, Edmund Schiller & Nesrine Akkari, 2017, An annotated list of the Diplopoda described by Aloïs Humbert alone and with Henri de Saussure, and the Diplopoda from Saussure’s Mexico expedition, Revue suisse de Zoologie 124 (2), pp. 203-224 : 206

californicus Humbert & Saussure, 1870: 177 [ Spirostreptus ].

California. Unspecified number of ♂.

Saussure & Humbert (1872) gave a more detailed redescription, implying that they only had one specimen. No specimens found in the MHNG. There is a ♂ type specimen, collected in California by Parreyss, in the NHMW (Inventory number 2168, Acquisition number 1866.I.43). The Acquisition Register shows that the lot contained only one specimen, so this can be considered the holotype. Hoffman (1999: 36) considered that the placement of this species as a member of the genus Spirostreptus rather than Spirobolus in the original description was probably a lapsus calami.

A junior synonym of Tylobolus uncigerus (Wood, 1864) (photo P. Schwendinger).