Published November 10, 2017 | Version v1
Taxonomic treatment Open

Cryptolarella abyssicola

Description

Cryptolarella abyssicola (Allman, 1888)

(Fig. 3C–E)

Cryptolarella abyssicola — Marques et al., 2005: 711 –719, fig. 1 (synonymy)

Material examined. 51416#1, one stem fragment c. 14 mm long, no gonothecae; 52602#13, four stem fragments up to 23 mm long, with gonothecae; 52701#6, three stems up to 70 mm high, with gonothecae; 52701#48, a few fragments up to 33 mm long, no gonothecae.

Description. Polysiphonic stems, up to 70 mm high. Hydrorhiza rhizoidal, quite robust, formed by a few, basally polysiphonic stolons. Hydrothecae arising in an indefinite pattern. Hydrotheca (Fig. 3C–D) tubular, diameter roughly constant throughout its length. Hydrotheca bent outwards at distal part. Free portion of hydrotheca highly variable. Hydrothecal aperture circular, rim even, frequently with many renovations.

Gonothecae solitary, resting on stem and branches. Gonotheca elongate, with large, circular, distal aperture (Fig. 3E). Gonothecal wall with fine transversal striation (Fig. 3E).

Only one category of microbasic euryteles observed.

Measurements (in µm). Hydrotheca: diameter at aperture 140–180. Gonotheca: length, 2100–2400, diameter at aperture 360–400. Cnidome: microbasic euryteles, 8– 9 x 3–3.5.

Remarks. See Marques et al, (2005) for a revision and wide discussion on the genus Cryptolarella, as well as for a re-description of the type material of the species.

Ecology and distribution. This is a deep-water species, found at depths from 200 (Millard 1975) to 6328 m (Vervoort 1972) in scattered records from the Antarctic, Atlantic, Pacific and Indian oceans (cf. Marques et al. 2005). The present material comes from the Porcupine Seabight and the Porcupine Abyssal Plain, collected at depths from 2770 to 4853 m, with gonothecae in May.

Notes

Published as part of Peña Cantero, Álvaro L. & Horton, Tammy, 2017, Benthic hydroids (Cnidaria, Hydrozoa) from bathyal and abyssal depths of the Northeast Atlantic held in the modern Discovery Collections, pp. 1-30 in Zootaxa 4347 (1) on page 8, DOI: 10.11646/zootaxa.4347.1.1, http://zenodo.org/record/1044772

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Linked records

Additional details

Biodiversity

Family
Lafoeidae
Genus
Cryptolarella
Kingdom
Animalia
Order
Leptothecata
Phylum
Cnidaria
Scientific name authorship
Allman
Species
abyssicola
Taxon rank
species
Taxonomic concept label
Cryptolarella abyssicola (Allman, 1888) sec. Cantero & Horton, 2017

References

  • Allman, G. J. (1888) Report on the Hydroida dredged by H. M. S. Challenger during the years 1873 - 76. Part II. The Tubularinae, Corymorphinae, Campanularinae, Sertularinae, and Thalamophora. Report of the Scientific Results of the Voyage of H. M. S. Challenger 1873 - 1876, 23, 1 - 90.
  • Marques, A. C., Pena Cantero, A. L. & Migotto, A. E. (2005) Revision of the genus Cryptolarella Stechow, 1913 (Lafoeidae, Leptothecata, Hydrozoa). Journal of Natural History, 39, 709 - 722. https: // doi. org / 10.1080 / 00222930400001467
  • Millard, N. A. H. (1975) Monograph on the Hydroida of southern Africa. Annals of the South African Museum, 68, 1 - 513.
  • Vervoort, W. (1972) Hydroids from the Theta, Vema and Yelcho cruises of the Lamont Doherty geological observatory. Zoologische Verhandelingen, Leiden, 120, 1 - 247.