''Raphitoma lineolata'' is a species of

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a marine

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk in the family

Raphitomidae Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & Rocroi J.-P. (Ed.) (2005). "Classification and nomenclator of gastropod families". ''Malacologia'' 47(1-2). . 39 ...

. The subspecies ''Raphitoma lineolata fuscata'' Nordsieck, 1977 is a synonym of ''Raphitoma lineolata'' (B.D.D, 1883)

Description

The teleoconch consists of 5 convex

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...

s, with conspicuous suture. The axial sculpture consists of 19 ribs slightly leaning backwards, and interspaces of the same width as the ribs. The spiral sculpture on the

body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ...

consists of 18 cordlets, of which 8 above the aperture, with interspaces wider (×1.5) than the cordlets. The cancellation is rectangular, with small and elongated tubercles at the intersection of axials and spirals. The tubercles on the adapical cordlets of the first whorls are narrow and spinulose. The sculpture is visible in transparency throughout the internal shell wall. The

anal sinus The anal sinuses (rectal sinuses) are furrows in the anal canal, that separate the anal columns from one another. The anal sinuses end below in small valve-like folds, termed anal valves The anal valves are small valve-like folds at the lower ends ...

is conspicuous, corresponding to two spiral cordlets. The columella is simple, slightly sinuous anteriorly, gently angled posteriorly. The outer lip shows 11 strong inner denticles. The anteriormost, weakest, delimit the

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water is ...

and the posteriormost delimit the anal sinus. The siphonal canal is short, widely open and slightly curved. The ground colour of the shell is orange-tawny, with lighter cordlets and rare white tubercles. On the first teleoconch whorl there are two white axials . On the body whorl, the eighth abapical cordlet becomes lighter toward the peristome, with some white spots. Then two axials closest to the peristome are white on the central part.

Distribution

Entire Mediterranean and NE Atlantic

References

* Pusateri F., Giannuzzi-Savelli R. & Oliverio M. 2013. ''A revision of the Mediterranean Raphitomidae 2: On the sibling species Raphitoma lineolata (B.D.D., 1883) and Raphitoma smriglioi n. sp''. Iberus, 31(1): 11-20 * Giannuzzi-Savelli R., Pusateri F. & Bartolini S., 2018. A revision of the Mediterranean Raphitomidae (Gastropoda: Conoidea) 5: loss of planktotrophy and pairs of species, with the description of four new species. Bollettino Malacologico 54, Suppl. 11: 1-77

External links

Bucquoy E., Dautzenberg P. & Dollfus G. (1882-1886). Les mollusques marins du Roussillon. Tome Ier. Gastropodes. Paris, J.B. Baillière & fils 570 p., 66 pl.

Terlizzi, A.; Scuderi, D.; Fraschetti, S.; Anderson, M. J. (2005). Quantifying effects of pollution on biodiversity: a case study of highly diverse molluscan assemblages in the Mediterranean. Marine Biology. 148, 293-305
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Gastropods.com: ''Raphitoma lineolata''

Biolib.cz: ''Raphitoma lineolata''

{{DEFAULTSORT:Raphitoma Lineolata lineolata Gastropods described in 1883