Ikedosoma (Annelida: Echiura: Thalassematidae) from the tropical pacific, with description of a new species

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Abstract

A new species of the thalassematid echiuran Ikedosoma abemama sp. nov. is described based on a single specimen collected from Abemama Atoll, the Gilbert Islands, Kiribati. The species is particularly distinguishable from all congeners by the absence of the proboscis lower lip. A single specimen of Ikedosoma collected from Dam Bay, Nha Trang, Vietnam is also described, being similar to the new species, although its poor condition prevented a positive identification. The first confirmed records of Ikedosoma from the tropical Pacific Ocean are included (hitherto known only from temperate waters of Japan), in addition to a summary table of diagnostic characteristics and a dichotomous key to the species of Ikedosoma.

Original languageEnglish
Pages (from-to)267-273
Number of pages7
JournalSpecies Diversity
Volume24
Issue number2
DOIs
Publication statusPublished - 2019 Jan 1
Externally publishedYes

Keywords

  • Abemama atoll
  • Alpheus echiurophilus
  • Eupontonia nudirostris
  • Kiribati
  • Nha trang
  • Singleton
  • Spoon worm
  • The gilbert islands
  • Vietnam

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

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