Araiofusus colpoicus

Araiofusus colpoicus
Shell of Araiofusus colpoicus (holotype at the Smithsonian Institution)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Fasciolariidae
Genus:	Araiofusus
Species:	A. colpoicus
Binomial name
Araiofusus colpoicus (Dall, 1915)
Synonyms
Fusinus colpoicusDall, 1915 (original combination)

Araiofusus colpoicus is a species of sea snail, a marine gastropod mollusk in the family Fasciolariidae, the spindle snails, the tulip snails and their allies. ^[1]

Description

(Original description) This species resembles Barbarofusus barbarensis (Trask, 1855) when the latter reaches approximately 60 mm in length.

It is distinguishable from B. barbarensis by the following features:

Axial Ribs: It possesses 13 axial ribs (versus 11 in B. barbarensis). These ribs are narrower and separated by wider interspaces.

Spiral Sculpture: The revolving threads are notably sharper and exhibit a more conspicuous alternation in size.

Whorl Sculpture: On the penultimate whorl, there are 6 major and 6 minor spiral threads that cross the axial ribs without forming nodules.

At a total length of 66 mm (excluding the eroded nucleus), the shell has 8 whorls. The aperture and siphonal canal measure a combined 36 mm. The siphonal canal itself is conspicuously tortuous (twisted). ^[2]

Distribution

This marine species occurs in the Gulf of California

References

1. Araiofusus colpoicus (Dall, 1915) . 11 October 2025. Retrieved through: World Register of Marine Species .
2. Dall, W.H. (1915). "Notes on the West American species of Fusinus". The Nautilus. 29 (5): 54. Retrieved 11 October 2025. This article incorporates text from this source, which is in the public domain .

External links

• Callomon P. & Snyder M.A. (2017). A new genus and nine new species in the Fasciolariidae (Gastropoda: Buccinoidea) from southern California and western Mexico. Proceedings of the Academy of Natural Sciences of Philadelphia. 165(1): 55–80