Phylogenetic and biogeographic analysis of the spear lobsters Linuparus (Decapoda: Palinuridae), with the description of a new species

Kwok Ho TSOI, Tin Yam CHAN, Ka Hou CHU

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9 Citations (Scopus)

Abstract

Linuparus White, 1847 comprises three extant species, Linuparus trigonus (Von Siebold, 1824), L. sordidus Bruce, 1965, and L. somniosus Berry and George, 1972, as well as 32 fossil species. Most fossil records are from North America and Europe, but the extant species are all confined to the Indo-West Pacific. Different colour forms in L. trigonus and L. sordidus have been noted, with Northern Hemisphere specimens generally darker in colour for both species. The phylogenetic relationships of the extant Linuparus species, including the colour forms, were investigated using mitochondrial 12S rRNA and COI gene sequence analysis. We found no genetic evidence to differentiate the colour morphs of L. sordidus, but the two colour forms of L. trigonus were clearly distinct at the species level. This is supported morphologically by a consistent difference in the shape of the thoracic sternum between the two forms. The paler coloured Southern Hemisphere form is described as a new species, L. meridionalis. Phylogenetic analysis shows that L. trigonus and L. meridionalis sp. nov. are derived sister taxa, while L. somniosus is basal within the genus. Thus the present results support the previous hypothesis that Linuparus was originated in shallow water. Copyright © 2011 Published by Elsevier GmbH All rights reserved.
Original languageEnglish
Pages (from-to)302-315
JournalZoologischer Anzeiger
Volume250
Issue number4
DOIs
Publication statusPublished - Oct 2011

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Palinuridae
lobsters
Decapoda
color
new species
phylogeny
fossils
sternum
chest
morphs
small fruits
sequence analysis
Linuparus
ribosomal RNA
nucleotide sequences
water

Citation

Tsoi, K. H., Chan, T. Y., & Chu, K. H. (2011). Phylogenetic and biogeographic analysis of the spear lobsters Linuparus (Decapoda: Palinuridae), with the description of a new species. Zoologischer Anzeiger, 250(4), 302-315.

Keywords

  • Phylogeny
  • Biogeography
  • Cryptic species
  • Spear lobster
  • Linuparus meridionalis