Published December 31, 2004 | Version v1
Taxonomic treatment Open

Phascolion (Isomya) tuberculosum Theel

Description

Phascolion (Isomya) tuberculosum Théel

Phascolion tuberculosum Théel, 1875: 15 –16.

Type locality: Koster, western Sweden, 25– 35 m.

Remarks: The single 25 mm representative of this species had been living in a gastropod shell and has a cluster of epizoans around the base of the introvert. The holdfast papillae are flattened discs some with a circular margin of pale hardened protein. There are sparsely scattered dark, large hooks. The two retractor muscles are of almost equal size and both originate very close to the posterior end of the trunk.

Distribution: Common in the northeastern Atlantic, including the Azores, Mid­Atlantic Ridge, Bay of Biscay, and Scandinavian waters at bathyal depths (25–2700 m). The few specimens from Japan and New Zealand (as P. temporariae, Edmonds, 1976) from 93–300 m point to a low­density population in the western Pacific Ocean.

This sample reinforces that previous report from New Zealand of what appears to be a low­density southern hemisphere population.

Notes

Published as part of Cutler, Edward B., Schulze, Anja & Dean, Harlan K., 2004, Zealand species, pp. 1-19 in Zootaxa 525 on page 11, DOI: 10.5281/zenodo.158002

Files

Files (1.5 kB)

Name Size Download all
md5:1f44964018d18c73575b5e4348e0da8f
1.5 kB Download

System files (7.7 kB)

Name Size Download all
md5:b6a467ec030184a6cd77dfca23adfa09
7.7 kB Download

Linked records

Additional details

Biodiversity

Family
Phascoliidae
Genus
Phascolion
Kingdom
Animalia
Order
Golfingiiformes
Phylum
Sipuncula
Scientific name authorship
Theel
Species
tuberculosum
Taxon rank
species

References

  • Theel, H. (1875) Etudes sur les gephyriens inermes des mers de la Scandinavie, du Spitzberg et du Groenland. Bihang till Kungliga Svenska Vetenskaps-Akademiens Handlingar, 3, 1 - 30.
  • Edmonds, S. J. (1976) Three sipunculan species (two new) from New Zealand. New Zealand Journal of Marine and Freshwater Research, 10, 217 - 224.