Chonodesmus regularis Cook, 1896

Reyes-Peñata, Liseth Alejandra, Romero-Rincon, Juan, Martínez-Torres, Daniela & García-Sarmiento, Martha J., 2025, Two new species of the flat-backed millipede genus Chonodesmus Cook, 1896 (Polydesmida, Cryptodesmidae, Cryptodesmini) from Colombia with a redescription of the type species, Zootaxa 5659 (2), pp. 223-239 : 228

Chonodesmus regularis Cook, 1896 nomen dubium

Fig. 3

Chonodesmus regularis Cook, 1896: 23 .

Cryptodesmus regularis : Attems, 1899: 266.

Material examined

Type. COLOMBIA ● juvenile ♂; Bogotá, D.C.; (4.609722, -74.081750); 2582 m a.s.l.; dry and pinned, Linding leg. (ZMB-305) .

Remarks. The species C. regularis was described from an individual of the type series of C. alatus from Bogotá, D.C. This species was included together with C. alatus to form the genus Chonodesmus . However, it was described poorly because it was based on morphological characters not too important for the delimitation of species in Cryptodesmidae . The type material used for the description is incomplete; being a juvenile male with the first 12 body rings, dry and pinned ( Fig. 3 ).

When comparing C. alatus and C. regularis , it seems possible to suggest that the latter name is a juvenile of C. alatus , not only because both were selected from the type series of C. alatus , but also due to its similar morphological characteristics such as the shape of the paranota and collum, the location of the ozopores, the distribution of dorsal tubercles and the presence of a distal spine of the seventh pair of legs. However, since the holotype of C. regularis is a juvenile, it is impossible to confirm its gonopodal structure and therefore to make the correct determination. Collecting further, fresh, topotypic material from Bogotá D.C. may finally allow for the identity of C. regularis to be clarified.

Figures

FIGURE 3. Chonodesmus regularis Cook, 1896 nomen dubium, juvenile male type (ZMB-13168). A. Anterior part of the body in dorsal view. B. Anterior part of the body in ventral view, showing gonopodal primordia. C. Habitus and labels. Scale bars: 0.2 mm.