Longchaeus acus, common name the needle pyram, is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.[1][2][3]
| Needle pyram | |
|---|---|
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| A shell of Longchaeus acus from Samoa | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Family: | Pyramidellidae |
| Genus: | Longchaeus |
| Species: | L. acus
|
| Binomial name | |
| Longchaeus acus (Gmelin, 1791)
| |
| Synonyms[1] | |
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Description
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The shell is polished. Its color is white, with dark chestnut or chocolate spots, usually arranged in three revolving series on the whorls of the teleoconch and five series on the body whorl. The columella is three-plaited with the upper plait largest. The lip is sometimes lirate within. The peripheral groove becomes in this species either obsolete or indicated by a slight angle.[4] The length of the shell varies between 19 mm and 67 mm.
Distribution
editThis marine species occurs in the Indo-W Pacific (Red Sea, Tanzania, Madagascar, Mauritius, Mascarene Basin[1] and in South East Asia, in Vietnam and Philippines).
References
edit- ^ a b c Rosenberg, G. (2010). Pyramidella acus (Gmelin, 1791). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=208425 on 2012-01-12
- ^ Drivas, J. & M. Jay (1988). Coquillages de La Réunion et de l'île Maurice
- ^ Dautzenberg, P. (1923). Liste preliminaire des mollusques marins de Madagascar et description de deux especes nouvelles. Journal de Conchyliologie 68: 21-74.
- ^ G.W. Tryon, Manual of Conchology vol. VIII p. 301; 1889
- Okutani T., ed. (2000) Marine mollusks in Japan. Tokai University Press. 1173 pp. page(s): 703
External links
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- Biodiversity Heritage Library (12 publications)
- Encyclopedia of Life
- USNM Invertebrate Zoology Mollusca Collection
- World Register of Marine Species
- "Pyramidella (Longchaeus) acus". Gastropods.com. Retrieved 7 February 2012.