Molecular phylogeny of the tribe Philodryadini Cope, 1886 (Dipsadidae: Xenodontinae): Rediscovering the diversity of the South American Racers
Abstract South American racers of the tribe Philodryadini are a widespread and diverse group of Neotropical snakes with a complex taxonomic and systematic history. Recent studies failed to present a robust phylogenetic hypothesis for the tribe, mainly due to incomplete taxon sampling. Here we provid...
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| Format: | Article |
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Universidade de São Paulo
2020-11-01
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| Series: | Papéis Avulsos de Zoologia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492020000100252&tlng=en |
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| author | Juan Camilo Arredondo Felipe G. Grazziotin Gustavo J. Scrocchi Miguel Trefaut Rodrigues Sandro Luís Bonatto Hussam Zaher |
| author_facet | Juan Camilo Arredondo Felipe G. Grazziotin Gustavo J. Scrocchi Miguel Trefaut Rodrigues Sandro Luís Bonatto Hussam Zaher |
| author_sort | Juan Camilo Arredondo |
| collection | DOAJ |
| description | Abstract South American racers of the tribe Philodryadini are a widespread and diverse group of Neotropical snakes with a complex taxonomic and systematic history. Recent studies failed to present a robust phylogenetic hypothesis for the tribe, mainly due to incomplete taxon sampling. Here we provide the most extensive molecular phylogenetic analysis of Philodryadini available so far, including 20 species (83% of the known diversity) from which six were not sampled previously. Our results reveal that Philodryadini is not monophyletic, but instead includes a central Andean clade formed by Philodryas simonsii, P. tachymenoides, and P. amaru, and a southern and cis-Andean clade including all remaining philodryadines. This discovery requires resurrection of two genera as well as erection of a new tribe of Xenodontinae for the central Andean clade. Within the southern and cis-Andean radiation, our analyses resolve a basal dichotomy separating two main lineages: Clade A, containing the Common Green Racers P. laticeps and P. viridissima and the South American Vine snakes P. georgeboulengeri and P. argentea; and Clade B, including the remaining species of Philodryas sensu stricto. We resurrect the genera Chlorosoma and Xenoxybelis to better represent the monophyly of lineages within the southern and cis-Andean clade. |
| first_indexed | 2024-12-24T01:47:35Z |
| format | Article |
| id | doaj.art-40914c4c2b3045afba1d0b5c146b6e2d |
| institution | Directory Open Access Journal |
| issn | 1807-0205 |
| language | English |
| last_indexed | 2024-12-24T01:47:35Z |
| publishDate | 2020-11-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Papéis Avulsos de Zoologia |
| spelling | doaj.art-40914c4c2b3045afba1d0b5c146b6e2d2022-12-21T17:21:49ZengUniversidade de São PauloPapéis Avulsos de Zoologia1807-02052020-11-016010.11606/1807-0205/2020.60.53Molecular phylogeny of the tribe Philodryadini Cope, 1886 (Dipsadidae: Xenodontinae): Rediscovering the diversity of the South American RacersJuan Camilo Arredondohttps://orcid.org/0000-0003-1925-4556Felipe G. Grazziotinhttps://orcid.org/0000-0001-9896-9722Gustavo J. Scrocchihttps://orcid.org/0000-0002-8924-8808Miguel Trefaut Rodrigueshttps://orcid.org/0000-0003-3958-9919Sandro Luís Bonattohttps://orcid.org/0000-0002-0064-467XHussam Zaherhttps://orcid.org/0000-0002-6994-489XAbstract South American racers of the tribe Philodryadini are a widespread and diverse group of Neotropical snakes with a complex taxonomic and systematic history. Recent studies failed to present a robust phylogenetic hypothesis for the tribe, mainly due to incomplete taxon sampling. Here we provide the most extensive molecular phylogenetic analysis of Philodryadini available so far, including 20 species (83% of the known diversity) from which six were not sampled previously. Our results reveal that Philodryadini is not monophyletic, but instead includes a central Andean clade formed by Philodryas simonsii, P. tachymenoides, and P. amaru, and a southern and cis-Andean clade including all remaining philodryadines. This discovery requires resurrection of two genera as well as erection of a new tribe of Xenodontinae for the central Andean clade. Within the southern and cis-Andean radiation, our analyses resolve a basal dichotomy separating two main lineages: Clade A, containing the Common Green Racers P. laticeps and P. viridissima and the South American Vine snakes P. georgeboulengeri and P. argentea; and Clade B, including the remaining species of Philodryas sensu stricto. We resurrect the genera Chlorosoma and Xenoxybelis to better represent the monophyly of lineages within the southern and cis-Andean clade.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492020000100252&tlng=enPhilodryasChlorosomaXenoxybelisAndean EndemismNew TribeHemipenial morphology. |
| spellingShingle | Juan Camilo Arredondo Felipe G. Grazziotin Gustavo J. Scrocchi Miguel Trefaut Rodrigues Sandro Luís Bonatto Hussam Zaher Molecular phylogeny of the tribe Philodryadini Cope, 1886 (Dipsadidae: Xenodontinae): Rediscovering the diversity of the South American Racers Papéis Avulsos de Zoologia Philodryas Chlorosoma Xenoxybelis Andean Endemism New Tribe Hemipenial morphology. |
| title | Molecular phylogeny of the tribe Philodryadini Cope, 1886 (Dipsadidae: Xenodontinae): Rediscovering the diversity of the South American Racers |
| title_full | Molecular phylogeny of the tribe Philodryadini Cope, 1886 (Dipsadidae: Xenodontinae): Rediscovering the diversity of the South American Racers |
| title_fullStr | Molecular phylogeny of the tribe Philodryadini Cope, 1886 (Dipsadidae: Xenodontinae): Rediscovering the diversity of the South American Racers |
| title_full_unstemmed | Molecular phylogeny of the tribe Philodryadini Cope, 1886 (Dipsadidae: Xenodontinae): Rediscovering the diversity of the South American Racers |
| title_short | Molecular phylogeny of the tribe Philodryadini Cope, 1886 (Dipsadidae: Xenodontinae): Rediscovering the diversity of the South American Racers |
| title_sort | molecular phylogeny of the tribe philodryadini cope 1886 dipsadidae xenodontinae rediscovering the diversity of the south american racers |
| topic | Philodryas Chlorosoma Xenoxybelis Andean Endemism New Tribe Hemipenial morphology. |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492020000100252&tlng=en |
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