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New insights on the phylogenetic relationships of the Proseriata (Platyhelminthes), with proposal of a new genus of the family Coelogynoporidae
Curini-Galletti, M.; Webster, B.L.; Huyse, T.; Casu, M.; Schockaert, E.R.; Artois, T.J.; Littlewood, T.J. (2010). New insights on the phylogenetic relationships of the Proseriata (Platyhelminthes), with proposal of a new genus of the family Coelogynoporidae. Zootaxa 2537: 1-18
In: Zootaxa. Magnolia Press: Auckland. ISSN 1175-5326; e-ISSN 1175-5334
Peer reviewed article  
Available in  Authors 
Keywords
    Ciliopharyngiella Ax, 1952 [WoRMS]; Lithophora [WoRMS]; Unguiphora [WoRMS]
    Marine/Coastal
Author keywords
    phylogeny; taxonomy; ssrDNA; lsrDNA; Unguiphora; Lithophora; Ciliopharyngiella
Authors  Top 
  • Curini-Galletti, M.
  • Webster, B.L.
  • Huyse, T.
  • Casu, M.
  • Schockaert, E.R.
  • Artois, T.J., more
  • Littlewood, T.J.
Abstract
    Proseriata is a diverse and species-rich taxon of Neoophora (Platyhelminthes). The group is divided into two morphologically well-characterised taxa: Lithophora and Unguiphora. Previous molecular analyses, aimed at ascertaining in-group relationships of the Proseriata, were equivocal in supporting the monophyly of the Lithophora, and of one of its families, the Coelogynoporidae. Here we present a new phylogeny of the Proseriata, based on complete ssrDNA and partial (D1-D6) lsrDNA. The analysis includes 36 proseriate species. 13 new sequences from seven species are used, four of which from species of the Coelogynoporidae and one from a new species of the recently established family Calviriidae. Phylogenetic analysis was performed using Bayesian Inference (BI), maximum likelihood (ML) and maximum parsimony (MP). Clades were considered to have high nodal support if BI posterior probability and ML and MP bootstrap percentages were >90%. The resulting cladogram strongly supports the monophyly of the Lithophora. In addition, the monophyly of the Coelogynoporidae and their inclusion in the Lithophora are corroborated. Within the Lithophora, two sister clades are supported, including Coelogynoporidae+Calviriidae, and Otoplanidae+Archimonocelididae+Monocelididae respectively. In the Coelogynoporidae, there was a poor correspondence between estimates of phylogeny and the monophyly of genera, suggesting the family is in need of systematic revision. Current morphology-based systematic arrangements of Otoplanidae and Monocelididae are not supported by molecular results. The enigmatic taxon Ciliopharyngiella (formerly included in the Rhabdocoela) clusters with the Unguiphora, although with low support. One new species of Coelogynoporidae (Parainvenusta englarorum n. gen n. sp.) is described and discussed in the appendix.
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