Amaea splendida

Amaea splendida
Shell of Amaea splendida (specimen at the Natural History Museum, Rotterdam)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Family:	Epitoniidae
Genus:	Amaea
Species:	A. splendida
Binomial name
Amaea splendida (de Boury, 1913)
Synonyms [1]
Amaea kawamuraiAzuma, 1960 Epitonium kawamurai(Azuma, 1960) Epitonium splendidum(de Boury, 1913) Scala (Elegantiscala) splendidade Boury, 1913 Scala splendidade Boury, 1913 Scalina splendida(de Boury, 1913)

Amaea splendida is a species of predatory sea snails, marine prosobranch gastropod mollusks in the family Epitoniidae. ^[1]

Description

The length of the shell attains 45 mm, its diameter 13 mm.

(Original description in French) The shell is slightly smaller than that of Amaea arabica , consisting of 11 whorls. The protoconch is broken. The shell even has one whorl less towards the apex and one less towards the base than A. arabica, resulting in exactly the same number of whorls for two shells of the same age. The author has not yet seen any specimens reaching the size of adult A. arabica. The individual the author is considering as the holotype appears indeed to have reached its maximum development. The suture is deep, somewhat channeled, and much less open than that of A. arabica. It is also slightly less oblique. The axial ribs, which are less prominent than in the previous species, tend to be composed of a greater number of layers, although these are still few. They are much tighter, with 32 ribs instead of 26 on the body whorl. The disc is more concave, adorned with more numerous concentric cords than in A. arabica — 5 in total, including 1 small near the columella instead of 3 altogether.

The spiral sculpture is fine and dense. It includes: one very small cord between the basal cord and the first main cord, and two small ones between the upper main cord and the suture. In total, there are 8 instead of 7. Despite this slight difference, they appear much tighter, with the whorls being lower. These cords are much less coarse than in A. arabica.

In summary, this species is distinguished from A. arabica by its much finer, tighter ornamentation, its narrower and less oblique suture, its more concave disc, and its greater number of ribs. ^[2]

Distribution

This marine species occurs in the Red Sea and in the Indo-West Pacific, from Mauritius to the Philippines, China, Japan and Australia. ^[3]

References

1. Amaea splendida (de Boury, 1913) . 3 October 2024. Retrieved through: World Register of Marine Species .
2. Boury, E. de (1912–1913). "Descriptions de Scalidae nouveaux ou peu connus". Journal de Conchylioliologie. 60 (2): 87–106. Retrieved 2 October 2024. This article incorporates text from this source, which is in the public domain .
3. Gbif.org: Amaea splendida - occurrence

• Clench, W.J. & Turner, R.D. (1951). "The genus Epitonium in the western Atlantic, Part I.". Monographs of the marine mollusks of the Western Atlantic. 2 (30): 249–288.
• Azuma, M. (1960). A catalogue of the shell-bearing Mollusca of Okinoshima, Kashiwajima and the adjacent area (Tosa Province). Shikoku, Japa. published by the author. pp. 1–102.
• Nakayama (2003). "A review of northwest Pacific epitoniids (Gastropoda: Epitoniidae)". Monographs of Marine Mollusca. 6: 21.
• Garcia, E.F. (2003). "New records of Indo-Pacific Epitoniidae (Mollusca: Gastropoda) with the description of nineteen new species". Novapex. 4: 1–22.

External links

• Conchology.be: image