Calliostoma vilvensi
| Calliostoma vilvensi | |
|---|---|
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| Shell of Calliostoma vilvensi (specimen at MNHN, Paris) | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Family: | Calliostomatidae |
| Genus: | Calliostoma |
| Species: | C. vilvensi
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| Binomial name | |
| Calliostoma vilvensi Poppe, 2004[1]
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Calliostoma vilvensi is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.[2]
Description
The shell of Calliostoma vilvensi is moderately tall and conical, with a height typically ranging between 12 mm and 23 mm.[3] It features a solid, non-umbilicate (imperforate) base and slightly convex whorls.
Morphology
- Protoconch: The larval shell consists of approximately 1.5 whorls and exhibits a fine, reticulate (net-like) sculpture characteristic of the genus.[4]
- Teleoconch: The adult shell comprises about 8 whorls. These are adorned with distinct beaded spiral cords. The beads are small, rounded, and closely set.
- Aperture and Base: The aperture is subquadrate and possesses a highly nacreous (pearly) interior. The base of the shell is nearly flat, decorated with 10 to 12 smooth or slightly granular spiral cords.
- Coloration: The background color is generally a creamy pinkish-white or light tan. It is frequently marked with darker reddish-brown flammules or blotches, particularly near the suture.
Taxonomy
The species was described by the Belgian malacologist Guido Poppe in 2004. It was named in honor of Claude Vilvens, a fellow malacologist and expert on the superfamily Trochoidea.[1] Within the genus Calliostoma, this species is noted for its particularly elegant shell sculpture and vivid pearlescent interior.
Distribution and habitat
This marine species is found within the Coral Triangle in the tropical Western Pacific. Known populations are located off:
- The Philippines (notably around the Zamboanga Peninsula, Mactan Island, and Aliguay Island).[5]
- The Solomon Islands.
It is a deep-water benthic species, usually found at depths between 80 m and 350 m. Most specimens are collected by local fishermen using tangle nets or by deep-sea dredging.[4]
Comparison
Calliostoma vilvensi is similar in appearance to Calliostoma vicentweiri, but can be distinguished by its flatter base and the specific arrangement of the beaded cords on the upper whorls. Additionally, C. vilvensi often displays more pronounced reddish-brown flammules compared to the more uniform coloration of related deep-water species.
References
- ^ a b Poppe, G.T. (2004). "Descriptions of spectacular new species from the Philippines (Gastropoda - Trochidae, Cypraeidae)". Visaya. 1 (1): 4–19.
- ^ Calliostoma vilvensi Poppe, 2004. Retrieved through: World Register of Marine Species.
- ^ "Calliostoma vilvensi Poppe 2004". Encyclopedia of Life. Retrieved 20 May 2024.
- ^ a b "Calliostoma vilvensi Poppe, 2004". Muséum national d'Histoire naturelle. Retrieved 20 May 2024.
- ^ "Calliostoma vilvensi Poppe, 2004". Ocean Biodiversity Information System (OBIS). Retrieved 20 May 2024.
External links
- "Calliostoma vilvensi". Gastropods.com. Retrieved 15 January 2019.
- World Register of Marine Species (WoRMS) - Calliostoma vilvensi
- Biodiversity Heritage Library (BHL) - Calliostomatidae resources