Simplogonomorpha, Nguyen, Anh D. & Korsos, Zoltan, 2011

Nguyen, Anh D. & Korsos, Zoltan, 2011, A revision of the millipede genus Riukiupeltis Verhoeff, 1939 (Diplopoda, Polydesmida, Paradoxosomatidae), with comments on the status of related species, ZooKeys 156, pp. 25-40 : 27

Simplogonomorpha gen. n.

Type species.

Haplogonosoma falcatum Attems, 1953, by present designation

Diagnosis.

This genus, Simplogonomorpha gen. n. can be distinguished from other genera within the tribe Chamberlinini Wang, 1956 (as defined by Chen et al. 2011) by the following characters: paraterga modestly developed, gonopod very simple, gonotelopodite tapering and distally curved down as much as forming U-shape or an almost complete circle. Solenomere very simple, thick, but slender, and strongly curved down. Solenophore (= gonopod tibiotarsus) absent.

Etymology.

A feminine noun to emphasize the simple gonopod conformation.

Remarks.

Jeekel (1968) in his classification of the family Paradoxosomatidae stated that "It appears that in Riukiupeltis the gonopod tiobiotarsus is also completely lost, although Verhoeff was of a different opinion when he described jamashinai". He believed that the gonopod tibiotarsus (= solenophore) was lost in Riukiupeltis , so he transferred Attems’s species Haplogonosoma falcatum to this genus.

In fact, the solenophore of Riukiupeltis jamashinai still exists, although short, and somewhat hidden next to the solenomere, whereas solenophore of Simplogonomorpha gen. n. is totally missing. A comparison of genera in the tribe Chamberlinini is provided in Table 1.