Amalda rubiginosa

Amalda rubiginosa
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Ancillariidae
Genus:	Amalda
Species:	A. rubiginosa
Binomial name
	Amalda rubiginosa; (Swainson, 1823)
Synonyms
	Ancilla rubiginosa Swainson, 1823 (original combination); Ancillaria rubiginosa Swainson, 1825 (objective synonym); Amalda hayashi Ninomiya, 1988;

Amalda rubiginosa is a species of sea snail, a marine gastropod mollusk in the family Ancillariidae.^[2]

Subspecies

Amalda rubiginosa albocallosa (Lischke, C.E., 1873)^[3]
Amalda rubiginosa rubiginosa (Swainson, W.A., 1823)^[4]

Description

(Original description) The shell is oblong, with an elongated and acuminated spire that can vary somewhat in proportion relative to the aperture. Its general color is chestnut-brown, with the spire being a darker, more rusty shade. The upper part of the body whorl displays a whitish belt, partially obscured by a rusty-colored callosity that extends over the spire.

A prominent, impressed line near the lower part of the body whorl forms a short, projecting tooth at the lower edge of the outer lip. While several species have a similar impressed line, this one is unusually distant from the lower belts. Below this line are two additional belts, the upper of which is bisected by a raised line. A deep groove marks the area above the columellar varix, with an additional shallow groove on the left side of the varix itself, which is whitish and only faintly grooved otherwise.

The upper part of the aperture is somewhat rounded, with the interior being slightly paler than the shell’s exterior. The columellar lip is whitish with a rose-colored tint. The dwarf variety of this shell exhibits a beautiful lilac tint across the inner aperture, inner lip, and part of the spire. ^[5]

Distribution

This marine species occurs off Vietnam, China, Taiwan and Japan.

References

^ Swainson W.J. (1823). A monograph of the genus Ancillaria, with descriptions of several new species. Quarterly Journal of Science, Literature, and the Arts 18 Page 272-289.. World Register of Marine Species, Retrieved 28 April 2010.
^ ^a ^b Amalda rubiginosa (Swainson, 1823). Retrieved through: World Register of Marine Species on 28 April 2010.
^ "Amalda (Baryspira) rubiginosa albocallosa". Gastropods.com. Retrieved 27 October 2010.
^ "Amalda (Baryspira) rubiginosa rubiginosa". Gastropods.com. Retrieved 27 October 2010.
^ Sowerby G.B. I (1830). Species Conchylirum or concise original descriptions and accompanied by figures of all the species of Recent shells, with their varieties. G.B. Sowerby, London. This article incorporates text from this source, which is in the public domain.

[1] Swainson W.J. (1823). A monograph of the genus Ancillaria, with descriptions of several new species. Quarterly Journal of Science, Literature, and the Arts 18 Page 272-289.. World Register of Marine Species, Retrieved 28 April 2010.

[WoRMS-2] Amalda rubiginosa (Swainson, 1823). Retrieved through: World Register of Marine Species on 28 April 2010.

[3] "Amalda (Baryspira) rubiginosa albocallosa". Gastropods.com. Retrieved 27 October 2010.

[4] "Amalda (Baryspira) rubiginosa rubiginosa". Gastropods.com. Retrieved 27 October 2010.

[5] Sowerby G.B. I (1830). Species Conchylirum or concise original descriptions and accompanied by figures of all the species of Recent shells, with their varieties. G.B. Sowerby, London. This article incorporates text from this source, which is in the public domain.

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