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

Masaatsu Tanaka

doi:10.12782/SPECDIV.24.267

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

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	267-273
Number of pages	7
Journal	Species Diversity
Volume	24
Issue number	2
DOIs	https://doi.org/10.12782/SPECDIV.24.267
Publication status	Published - 2019
Externally published	Yes

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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@article{79d4a81be800469b9ef73760698c28d5,

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

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.",

keywords = "Abemama atoll, Alpheus echiurophilus, Eupontonia nudirostris, Kiribati, Nha trang, Singleton, Spoon worm, The gilbert islands, Vietnam",

author = "Masaatsu Tanaka",

note = "Funding Information: The author is grateful to Drs Teruaki Nishikawa (NSMT) and Tomoyuki Komai (CBM) for making specimens available for study; to Dr Ivan Marin (A. N. Severtzov Institute of Ecology and Evolution of RAS) for providing information; to Dr Ming-Shiou Jeng (Academia Sinica) for help with literature; to Dr Masanori Sato (Kagoshima University) and three anonymous reviewers for offering helpful comments; and to Dr Graham Hardy (Ngunguru, New Zealand) for improving the English. The present study was partially supported by JSPS KAKENHI Grant Number JP17HO1913.",

year = "2019",

doi = "10.12782/SPECDIV.24.267",

language = "English",

volume = "24",

pages = "267--273",

journal = "Species Diversity",

issn = "1342-1670",

publisher = "Japanese Society of Systematic Zoology",

number = "2",

}

TY - JOUR

T1 - Ikedosoma (Annelida

T2 - Echiura: Thalassematidae) from the tropical pacific, with description of a new species

AU - Tanaka, Masaatsu

N1 - Funding Information: The author is grateful to Drs Teruaki Nishikawa (NSMT) and Tomoyuki Komai (CBM) for making specimens available for study; to Dr Ivan Marin (A. N. Severtzov Institute of Ecology and Evolution of RAS) for providing information; to Dr Ming-Shiou Jeng (Academia Sinica) for help with literature; to Dr Masanori Sato (Kagoshima University) and three anonymous reviewers for offering helpful comments; and to Dr Graham Hardy (Ngunguru, New Zealand) for improving the English. The present study was partially supported by JSPS KAKENHI Grant Number JP17HO1913.

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - Abemama atoll

KW - Alpheus echiurophilus

KW - Eupontonia nudirostris

KW - Kiribati

KW - Nha trang

KW - Singleton

KW - Spoon worm

KW - The gilbert islands

KW - Vietnam

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