Английская Википедия:Eucyclotoma albomacula

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Шаблон:Short description Шаблон:Use dmy dates Шаблон:Speciesbox

Eucyclotoma albomacula is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.[1] It was first described by E. Alison Kay in 1979 and is distinguished by a single spiral keel on each whorl with axial white stripes; the species name (albomacula) is derived from the Latin albo (white) and macula (speck or spot).[2]

Description

The shell varies greatly in length, with specimens ranging in size from 2Шаблон:Nbspmm to 8Шаблон:Nbspmm (0.08Шаблон:Nbsp-Шаблон:Nbsp0.31Шаблон:Nbspinches).[3] The holotype has a diameter of 2Шаблон:Nbspmm (0.08Шаблон:Nbspinches) and a length of about 7.75Шаблон:Nbspmm (0.3Шаблон:Nbspinches). The shell is tall-spired, thin, with a sloping spiral keel on each whorl. The shell is described as glossy, chestnut brown with three axial streaks of white colour. Its spire consists of a protoconch of two and a half whorls, a teleoconch of c. nine whorls, and an indistinct suture marked by a spiral head and a linear spiral of white and brown. It has a widely oval aperture about one-fifth the total length of the shell, a thin outer lip with protrusions of the spiral keels.[2]

Distribution

Eucyclotoma albomacula are rare, found at mesophotic depths between 59Шаблон:Nbspm to 195Шаблон:Nbspm (194Шаблон:Nbsp-Шаблон:Nbsp640Шаблон:Nbspft). They are thought to be endemic to the Hawaiian Islands.[3] The holotype was collected at a depth of 60Шаблон:Nbspm (197Шаблон:Nbspft), in Kepuhi Point, O'ahu. Specimens have been collected from Lāna'i, Ni'ihau, French Frigate Shoals, Laysan, Salmon Bank, Pearl and Hermes Atoll, Midway Atoll, and Kure Atoll.[3]

[3]
Specimens at Bernice P. Bishop Museum Shell length (mm) Site collected Depth range
1Шаблон:Nbsp(holotype specimen) 7.75 Kepuhi Point, O’ahi 60Шаблон:Nbspm
3Шаблон:Nbspspecimens 3.9Шаблон:Nbsp-Шаблон:Nbsp6.0 Lāna‘i 75Шаблон:NbspmШаблон:Nbsp-Шаблон:Nbsp91Шаблон:Nbspm
1Шаблон:Nbspspecimen 4.6 Ni‘ihau 59Шаблон:Nbspm
1Шаблон:Nbspspecimen 7.0 French Frigate Shoals 85Шаблон:Nbspm
1Шаблон:Nbspspecimen 2.5 Laysan 64Шаблон:Nbspm
2Шаблон:Nbspspecimens, 1Шаблон:Nbsppartial shell 2.7Шаблон:Nbsp-Шаблон:Nbsp3.5 Salmon Bank 82Шаблон:Nbspm (partial shell found at 91Шаблон:Nbspm)
12Шаблон:Nbspspecimens, 1Шаблон:Nbsppartial shell 2.2Шаблон:Nbsp-Шаблон:Nbsp3.0 Pearl and Hermes Atoll 55Шаблон:NbspmШаблон:Nbsp-Шаблон:Nbsp98Шаблон:Nbspm (partial shell found at 85Шаблон:Nbspm)
7Шаблон:Nbspspecimens, 1Шаблон:Nbsppartial shell 2.2Шаблон:Nbsp-Шаблон:Nbsp5.7 Midway Atoll 59Шаблон:NbspmШаблон:Nbsp-Шаблон:Nbsp65Шаблон:Nbspm (partial shell found at 84Шаблон:Nbspm)
4Шаблон:Nbspspecimens 2.0Шаблон:Nbsp-Шаблон:Nbsp6.8 Kure Atoll 88Шаблон:NbspmШаблон:Nbsp-Шаблон:Nbsp94Шаблон:Nbspm

This table does not represent every specimen of Eucyclotoma albomacula collected, merely specimens in possession of the Bernice P. Bishop Museum, Honolulu, Hawaii.

See also

References

Шаблон:Reflist

  • Severns, M. (2011). Shells of the Hawaiian Islands - The Sea Shells. Conchbooks, Hackenheim. 564 pp.
  • Liu J.Y. [Ruiyu] (ed.)(2008). Checklist of marine biota of China seas. China Science Press. 1267 pp

External links

Шаблон:Taxonbar