PYRAMIDELLIDAE

  Iolaea neofelixoides
(Nomura, 1936)

Relevant Synonyms
Kleinella neofelixoides Nomura, 1936

Misidentification
-

 photo: J. J. van Aartsen - M. Recevik / La Conchiglia    

SHORT DESCRIPTION
Shell with a smooth, heterostrophic top-whorl, formed by 5-6 strongly carinated whorls. Three keels, the first further apart from the other two, are recognisable on the teleoconch whorls and on the upper half of the body whorl. At the base, 5-6 more spiral keels visible. Axial sculpture of raised lines which are seen between the spiral keels. There is a narrow, but deep, umbilical chink and a tooth on the columella.

color : almost white.

common size : up to 4.5 mm.

DISTINGUISHING CHARACTERISTICS
The more conspicuous spiral sculpture, together with the evident prosocline growth-lines, make this species easily distinguishable from all the other Mediterranean pyramidellids. Perhaps, shells of this species with damaged apex could induce to a hurried identification with some rissoid species (e.g. Alvania weinkauffi (Weinkauff, 1868).

BIOLOGY / ECOLOGY
On the basis of the living specimens found along the Turkish coasts, it is possible to assume that this is a shallow water species.

habitat : 5-6 m depth.


1st Mediterranean record
Southeastern Turkey, 1998 [1994].


DISTRIBUTION
Worldwide: known from Japanese coasts (Nomura, 1936). Mediterranean: only known from Yumurtalik harbour, southeastern Turkey, 1994 (van Aartsen and Recevik, 1998).

ESTABLISHMENT SUCCESS
Very rare, known only from original record.

speculated reasons for success :
-


MODE OF INTRODUCTION
Unknown.


IMPORTANCE TO HUMANS
None.


KEY REFERENCES

  • Nomura S., 1936. Pyramidellidae from Siogama Bay, Northeast Honsyu, Japan. Saito Ho on Kai Museum Research Bulletin, 10: 1-108.
  • Nomura S., 1937. Additional Pyramidellidae from Siogama Bay, with remarks on the Molluscan fauna. Saito Ho on Kai Museum Research Bulletin, 13: 11-107.
  • van Aartsen J. J. and Recevik M., 1998. Altre due specie indo-pacifiche rinvenute nel Mediterraneo. La Conchiglia, 30(286): 13-15.

 

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Last update : December 2003

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