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Published January 20, 2023 | Version v1
Journal article Open

Total evidence analysis elucidates the tangled systematic scenario within Fidicinini (Hemiptera: Auchenorrhyncha, Cicadidae)

Authors/Creators

  • 1. Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil|Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil|Universidade Federal de Santa Maria, Santa Maria, Brazil
  • 2. Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
  • 3. Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil

Description

The Linnean, Wallacean, and Darwinian shortfalls are knowledge gaps about species taxonomy, distribution, and evolution, respectively. Fidicinini is a tribe of cicadas that suffers from these gaps. We assessed specimens of the tribe sharing similar male genital shape (uncus), but fitting the somatic morphology of either Dorisiana Metcalf, 1952 and Guyalna Boulard & Martinelli, 1996. We build a phylogenetic hypothesis by total evidence analysis and perform a character optimization of the uncus and timbal cover shapes, the last used as diagnostic for both genera. Dorisiana and Guyalna were recovered non-monophyletic. A new genus, Acanthoventris gen. nov., and ten new species are proposed: A. charrua Ruschel sp. nov., A. claudiae Ruschel sp. nov., A. faustopsaltrius Ruschel sp. nov., A. iara Ruschel sp. nov., A. igneus Ruschel sp. nov., A. olivarius Ruschel sp. nov., A. phoenix Ruschel sp. nov., A. rubemi Ruschel sp. nov., A. tumidus Ruschel sp. nov., and A. viridinotatus Ruschel sp. nov.; and three new combinations A. densusus (Boulard & Martinelli, 2011) comb. nov., A. drewseni (Stål, 1854) comb. nov., and A. jauffreti (Boulard & Martinelli, 2001) comb. nov. We provide illustrated identification keys, occurrence maps, and discuss the distribution of the species in the new genus.

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