Phylogenetic analyses of Cerithioidea (Mollusca, Caenogastropoda) based on comparative morphology

Authors

  • Luiz Ricardo L. Simone Universidade de São Paulo. Museu de Zoologia

DOI:

https://doi.org/10.11606/issn.2176-7793.v36i2p147-263

Keywords:

Cerithioidea, phylogeny, morphology, new species

Abstract

A detailed morphological study is performed on the following cerithioidean species: 1) family Thiaridae, Aylacostoma exoplicata n.sp., from Pará, Brazil; Aylacostoma ci n. sp. from Roraima, Brazil; Aylacostoma tenuilabris (Reeve), from São Paulo, Brazil; Melanoides tuberculatus (Müller), Eurasian species introduced in Brazil; 2) family Planaxidae, Supplanaxis nucleus (Bruguière),from Venezuela; 3) family Pleuroceridae, Doryssa ipupiara n. sp., from Roraima, Brazil; Doryssa atra (Bruguière), from French Guyana; Doryssa macapa (Moricand), from Amapá, Brazil; Pachychilus sp., from Chiapas, Mexico; 4) family Turritellidae, Turritella hookeri Reeve, from Rio de Janeiro, Brazil; 5) family Modulidae, Modulus modulus (L.),from Venezuela and Brazilian coasts; 6) family Cerithiidae, Cerithium atratum (Born) from Brazilian coast; Bittium varium (Pfeiffer) from S.E. Brazil; 7) family Diastomatidae, Finella dubia (Orbigny) from São Paulo, Brazil; 8) family Litiopidae, Alaba incerta (Orbigny) from Rio de Janeiro, Brazil; 9) family Baullariidae, Batillaria minima (Gmelin) from Venezuela; 10) family Cerithideidae, Cerithidea costata from Venezuela; 11) family Campanilidae, Campanile symbolicum Iredale,from Western Australia; and 12) family Vermetidae, Serpulorbis decussatus (Gmelin), from Espirito Santo, Brazil. (The Thiaridae and Pleuroceridae are freshwater groups, the remainder marine.) A cladistic analysis is undertaken using standard techniques, 122 characters (181 states) (included some autapomorphies) and polarization by outgroup method: archaeogastropod (Patellogastropoda, Vetigastropoda, Cocculiniformia and Nerithimorpha) and sometimes other caenogastropod outgroups. The consensus tree has the following topology: (Modulus modulus ((Campanile symbolicum (Serpulorbis decussatus - Turritella hookeri)) (Batillaria minima ((Pachychilus sp (Doryssa ipupiara (Doryssa atra - Doryssa macapa))) ((Cerithidea costata (Cerithium atratum (Alaba incerta (Bittium varium - Finella dubia)))) (Supplanaxis nucleus (Melanoides tuberculatus (Aylacostoma tenuilabris (Aylacostoma exoplicata - Aylacostoma ci))))))))), length = 331, CI= 55, RI= 73. The Cerithioidea is a monophyletic taxon, supported by 23 synapomorphies and includes Campanile and Serpulorbis.

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Published

2001-03-02

Issue

Section

Original Article

How to Cite

Simone, L. R. L. (2001). Phylogenetic analyses of Cerithioidea (Mollusca, Caenogastropoda) based on comparative morphology . Arquivos De Zoologia, 36(2), 147-263. https://doi.org/10.11606/issn.2176-7793.v36i2p147-263