Published March 14, 2024 | Version v1
Taxonomic treatment Open

Rhabdopleura recondita Beli, Cameron & Piraino 2018

  • 1. National Institute of Water & Atmospheric Research (NIWA), Private Bay 14901, Kilbirnie, Wellington 6241, New Zealand
  • 2. National Institute of Water & Atmospheric Research (NIWA), Private Bay 14901, Kilbirnie, Wellington 6241, New Zealand & Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore 117558, Singapore
  • 3. National Institute of Water & Atmospheric Research (NIWA), Private Bay 14901, Kilbirnie, Wellington 6241, New Zealand & Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore 117558, Singapore & National Institute of Water & Atmospheric Research (NIWA), Private Bay 14901, Kilbirnie, Wellington 6241, New Zealand & Lee Kong Chian Natural History Museum, National University of Singapore, 2 Conservatory Drive, Singapore 117377, Singapore & National Institute of Water & Atmospheric Research (NIWA), Private Bay 14901, Kilbirnie, Wellington 6241, New Zealand & Tropical Marine Science Institute, National University of Singapore, 18 Kent Ridge Road, Singapore 119227, Singapore & National Institute of Water & Atmospheric Research (NIWA), Private Bay 14901, Kilbirnie, Wellington 6241, New Zealand

Description

Rhabdopleura recondita Beli, Cameron & Piraino in Beli et al., 2018 (Fig. 5C)

Type locality. Near Tricase Port, Lecce, Italy, 39.8829° N, 18.4055° E, ~ 70 m depth, occurring within zooidal and other cavities of host bryozoans.

Key features. Inception of ringed erect tubes is direct. The creeping portion of the colony is non-tubular, comprising smooth-walled expansions lacking zigzag sutures, within bryozoan zooids; the free pectocaulus is not adherent to the inner-wall of the creeping tube. Septa separating individual zooids were not found. Colonies extend only a few millimetres. Erect tubes with fusellar collars project up to 0.67 mm from bryozoan orifices and holes in dead bryozoan zooids. Fusellus height is 37±11 μm.

Comment. Like R. compacta, colonies of R. recondita are highly distinctive, as well as substratum-limited, and unlikely to be confused with any other species.

Notes

Published as part of Gordon, Dennis P., Randolph Quek, Z. B. & Huang, Danwei, 2024, Four new species and a ribosomal phylogeny of Rhabdopleura (Hemichordata: Graptolithina) from New Zealand, with a review and key to all described extant taxa, pp. 323-357 in Zootaxa 5424 (3) on page 338, DOI: 10.11646/zootaxa.5424.3.3, http://zenodo.org/record/10821361

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Additional details

Biodiversity

References

  • Beli, E., Aglieri, G., Strano, F., Maggioni, D., Telford, M., Piraino, S. & Cameron, C. B. (2018) The zoogeography of extant rhabdopleurid hemichordates (Pterobranchia: Graptolithina), with a new species from the Mediterranean Sea. Invertebrate Systematics, 32, 100 - 110. https: // doi. org / 10.1071 / IS 17021