Amalda angustata
{{Short description|Species of gastropod}}
{{Use dmy dates|date=January 2024}}
{{Speciesbox
| image = Amalda angustata 001.jpg
| image_caption = Shell of Amalda angustata (specimen at the Natural History Museum, Rotterdam)
| taxon = Amalda angustata
| authority = (G.B. Sowerby II, 1859){{WRMS source|141612|Sowerby G.B. II (1859). Monograph of the genus Ancillaria. Thesaurus Conchyliorum 3|28 April 2010}}
| synonyms =
- Amalda errorum Tomlin, 1921
- Ancilla errorum Tomlin, 1921 (junior synonym)
- † Ancilla miserula Yokoyama, 1928 junior subjective synonym
- Ancillaria angustata G. B. Sowerby II, 1859 (original combination)
}}
Amalda angustata is a species of sea snail, a marine gastropod mollusk in the family Ancillariidae.{{WRMS species|409985|Amalda angustata (G.B. Sowerby II, 1859)||28 April 2010}}
Description
The length of the shell varies between 12 mm and 17 mm; its diameter 5.4 mm.
The shell is elongated and fusiform, with a slender, tapering shape. It has a high, pointed spire, typically smooth and glossy, with well-defined whorls. The overall appearance of the shell is sleek and streamlined. The body whorl is the largest and forms the majority of the shell's length. It is adorned with fine spiral striations, often subtle, giving the shell a polished look.
The aperture is narrow and elongated, occupying a significant portion of the shell's height. The outer lip is thin and smooth, curving gently at the base. The siphonal canal is relatively short and open, while the inner lip is coated with a thin callus, extending slightly onto the body whorl.
The shell tends to be pale, often a greyish or creamy white, sometimes with faint bands or markings that enhance its delicate appearance. The overall texture is smooth, with a glossy finish that reflects light subtly. {{cite book |last1=Sowerby |first1=G.B. II |title=Monograph of the genus Ancillaria. In: G. B. Sowerby II (ed.), Thesaurus Conchyliorum, or monographs of Genera of Shells, vol. 3 ( |date=1859 |publisher=privately published |location=London |page=13 |url=http://biodiversitylibrary.org/page/15940482}} {{source-attribution}}
This species is often associated with sandy environments, where its streamlined shape allows it to burrow easily.
Distribution
This marine species occurs off South Africa.
References
{{Reflist}}
- {{cite journal |last1=Yokoyama |first1=M. |title=Pliocene shells from Hyuga |journal=Journal of the Faculty of Science, Tokyo Imperial University |date=1928 |volume=2 |issue=7 |page=343}}
- {{cite journal |last1=Gratecap |first1=D. |title=Le genre Amalda en Afrique Australe |journal=Xenophora |date=2012 |volume=140 |page=29}}
External links
- {{cite journal |last1=Tomlin |first1=J.R. le B. |title=Six new marine shells from South Africa |journal=Journal of Conchology |date=1921 |volume=16 |issue=7 |page=216 |url=http://www.biodiversitylibrary.org/page/31904865#page/635/}}
- {{cite journal |last1=Kilburn |first1=R.N. |title=Notes on some South African Ancillinae with descriptions of five new species of Amalda |journal=Annals of the Natal Museum |date=1993 |volume=34 |issue=2 |page=374 |url=https://journals.co.za/doi/pdf/10.10520/AJA03040798_269}}
{{Taxonbar|from=Q4739227}}
{{DEFAULTSORT:Amalda Angustata}}