Rhodopetoma diaulax

Rhodopetoma diaulax is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae.[1]

Rhodopetoma diaulax
Original image of a shell of Rhodopetoma diaulax
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Pseudomelatomidae
Genus: Rhodopetoma
Species:
R. diaulax
Binomial name
Rhodopetoma diaulax
(Dall, 1908)
Synonyms[1]
  • Antiplanes diaulax (Dall, 1908)
  • Borsonella rhodope Dall, 1919
  • Rhodopetoma rhodope (Dall, 1919)
  • Turris diaulax Dall, 1908 (basionym)

Description

The shell contains seven or more whorls, exclusive of the (lost) nucleus. Its color is white covered with a pale olivaceous periostracum. The suture is distinct, not appressed. The axial sculpture consists of rather strong irregular incremental lines. The spiral sculpture consists of a thickened band between the suture and the somewhat constricted anal fasciole. At the shoulder there is a blunt angulation, in front of which are two obscure threads followed by a more distinct thread on which the suture is laid. On the body whorl in front of the angulation there are about 18 threads growing smaller and more close-set anteriorly. There is no siphonal fasciole. The aperture is rather narrow. The anal sulcus is shallow rounded. The outer lip is thin, arcuate, and sharp. The inner lip is erased. The columella is straight, and obliquely attenuated in front. The siphonal canal is rather wide, not recurved.

The height of shell is 19 mm; of the body whorl, 11 mm; the diameter: 7 mm.[2]

Distribution

This marine species occurs off Santa Rosa Island, California.

References
  1. Rhodopetoma diaulax (Dall, 1908). Retrieved through: World Register of Marine Species on 11 February 2012.
  2. Dall (1919) Descriptions of new species of Mollusca from the North Pacific Ocean; Proceedings of the U.S. National Museum, vol. 56 (1920) (described as Borsonella rhodope)
  • Abbott R. T. (1974). American Seashells. The marine mollusca of the Atlantic and Pacific coast of North America. II edit. Van Nostrand, New York 663 p. + 24 pl: page(s): 265
  • McLean J.H. (1996). The Prosobranchia. In: Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel. The Mollusca Part 2 – The Gastropoda. Santa Barbara Museum of Natural History. volume 9: 1-160
  • "Rhodopetoma diaulax". Gastropods.com. Retrieved 23 January 2019.
  • Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295.
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