A monograph on the isopod genus Colopisthus (Crustacea

Isopoda: Cirolanidae) with the description of a new genus

Wendy Moore Brusca, Richard C. Brusca

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Colopisthus Richardson, 1902 is a rarely collected genus restricted in distribution to the tropical Atlantic Ocean with most species being known from the Caribbean region. Colopisthus species are highly endemic, none being known from more than a single island or a restricted mainland site. This monograph contains a redescription of the type species Colopisthus parvus Richardson, 1902, descriptions of four new species (Colopisthus canna, Colopisthus cavalier, Colopisthus ronrico, Colopisthus tresesquinas), a dichotomous key to the species, and a morphology-based phylogenetic analysis of the genus. Colopisthus parvus of Menzies and Glynn (1968) is shown to be a new species (C. ronrico), and C. parvus of Müller (1993) is also shown to be a new species (C. tresesquinas). As a result of the phylogenetic analysis, three species of Metacirolana Kussakin, 1979 (M. costaricensis, M. moortgati, M. sphaeromiformis) are assigned to a new genus, Aphantolana. Phylogenetic analysis indicates that Aphantolana and Colopisthus are sister groups. Within Colopisthus, C. cavalier and C. ronrico are a sister group to C. tresesquinas, C. parvus and C. canna. Biogeographic analysis suggests that Colopisthus and Aphantolana had their origins in the western Caribbean or pre-Pleistocene middle American seaway.

Original languageEnglish (US)
Pages (from-to)1329-1399
Number of pages71
JournalJournal of Natural History
Volume37
Issue number11
DOIs
StatePublished - Jun 10 2003

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Cirolanidae
Isopoda
Crustacea
isopod
Canna
new genus
Atlantic Ocean
new species
phylogeny
Islands
phylogenetics
redescriptions
Pleistocene
analysis
ocean

Keywords

  • Biogeography
  • Caribbean Sea
  • Cirolanidae
  • Crustacea
  • Isopoda
  • Phylogeny
  • Systematics

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Ecology

Cite this

A monograph on the isopod genus Colopisthus (Crustacea : Isopoda: Cirolanidae) with the description of a new genus. / Moore Brusca, Wendy; Brusca, Richard C.

In: Journal of Natural History, Vol. 37, No. 11, 10.06.2003, p. 1329-1399.

Research output: Contribution to journalArticle

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