Golovatch S.I.1, Korotaeva A.M.2 2024. Nine new Paradoxosomatidae millipedes from Peru, with an infrageneric reclassification of Iulidesmus Silvestri, 1895 (Diplopoda: Polydesmida) // Arthropoda Selecta. Vol.33. No.3: 293–327 [in English].
1 Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky prospekt 33, 119071 Moscow, Russia.
2 Institute of Biology and Chemistry, Moscow State Pedagogical University, Zoology and Ecology Department, Moscow 129164 Russia.
Sergei I. Golovatch sgolovatch@yandex.ru; https://orcid.org/0000-0001-7159-5484
Alena M. Korotaeva alenacorotaeva2017@mail.ru; https://orcid.org/0009-0009-2716-5140
doi: 10.15298/arthsel.33.3.01
ABSTRACT. The following nine new Paradoxosomatidae are described from Peru: Graphisternum gracile sp.n. (Graphisternini), Incamorpha eskovi gen.n., sp.n., Iulidesmus maculatus sp.n., I. cingulatus sp.n., I. satipo sp.n., I. pubescens sp.n., I. semicingulatus sp.n., I. asulcatus sp.n., and I. carpish sp.n. (all Catharosomatini). Incamorpha gen.n. is characterized within the tribe Catharosomatini by a subgeniculate gonopodal telopodite with a normal, not hypertrophied prefemorite, a distinct distofemoral process, but neither traces of a usual long and flagelliform solenomere nor an evident postfemoral sulcus to delimit a postfemorite proper. Iulidesmus Silvestri, 1895, by far the largest Neotropical genus of Paradoxosomatidae that presently comprises 85 species, all listed and supplied with brief descriptive notes, is rediagnosed and, based on the gonopodal conformation alone, split into a number of presumably natural species groups and subgroups: the hylaeicus group, the alacer group, the differens group, the marthae group, the golovatchi group, and the salvadorii group, the latter with the junki subgroup and the isthmianus subgroup. The newly outlined species groups and subgroups are all keyed and delimited in an evolutionary context, as a succession of stages from presumably simple and primitive to increasingly complex and advanced, this being largely related to the development of a postfemorite proper. The following new synonymy is advanced: Catharosoma Silvestri, 1897 = Montesecaria Kraus, 1956, syn.n. Catharosoma nitidum Kraus, 1954, from Peru, is returned back to Catharosoma where it was originally described. The following new combination is also proposed: Iulidesmus golovatchi (Jeekel, 2002), from Venezuela, comb.n. ex Montesecaria.
KEY WORDS: taxonomy, new genus, new species, species group, species subgroup, key, gonopod, evolution, iconography.
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