Guasuctenus gen. nov., a new Neotropical spider genus of Ctenidae (Araneae)

Autor(es)

Polotow, Daniele ^[1] ; Brescovit, Antonio D. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos UFSCar, DEBE, Campus Sao Carlos, Rodovia Washington Luis, Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[2] Inst Butantan, Lab Especial Colecoes Zool, Ave Vital Brasil 1500, BR-05503900 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Zootaxa; v. 4624, n. 4, p. 539-550, JUL 2 2019.
• Citações Web of Science: 0

Resumo

The new genus Guasuctenus gen. nov. is described based on the results of a recent phylogenetic analysis. This phylogeny, which included representatives of all Ctenidae subfamilies, showed that the genus Ctenus as currently defined, does not comprise a monophyletic group. The results indicated that several species are misplaced in Ctenus and should be transferred to new genera. Aiming to correct the placement of two species originally described in Ctenus, we propose the new genus Guasuctenus to accommodate those species and better represent their phylogenetic relationships. Guasuctenus is supported by the presence of a dorsal cymbial projection in the male palp. Previously regarded as a subspecies, Ctenus longipes vittatissimus Strand, 1916 is here ranked as species, and Guasuctenus longipes (Keyserling, 1891) new comb. and G. vittatissimus (Strand, 1916) new rank, new comb. are redescribed. Ctenus griseus Keyserling, 1891 is recognized as a junior synyonym of Ctenus longipes Keyserling, 1891. Lectotypes and paralectotypes of Guasuctenus vittatissimus (Strand, 1016) are designated for stability. The species of the genus are distributed in southern Brazil and Uruguay. (AU)

• Processo FAPESP: 06/55230-7 - Análise cladística das aranhas da subfamília Cteninae e revisão do gênero Celaetycheus Simon (Areneae: Ctenidae)
• Beneficiário: Daniele Polotow Geraldo
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 15/22000-8 - Taxonomia e sistemática de Acanthoctenidae (Ctenidae, Araneae) e cybertaxonomy aplicada à coleção de aracnídeos (Arachnida) do Museu de Zoologia da Universidade Estadual de Campinas
• Beneficiário: Daniele Polotow Geraldo
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 17/01294-9 - Taxonomia e sistemática de Acanthoctenidae (Ctenidae, Araneae) e cybertaxonomy aplicada à coleção de aracnídeos (Arachnida) do Museu de Zoologia da Universidade Estadual de Campinas
• Beneficiário: Daniele Polotow Geraldo
• Modalidade de apoio: Bolsas no Brasil - Jovens Pesquisadores