Ondina obliqua (Alder 1844)

Ondina obliqua is a rare species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.^[2][3]

Description

The shell reaches a length of 2.5 mm to 5 mm. The very thin, whitish shell has a transparent, glossy appearance. It has a typical intorted protoconch. The teleoconch contains five whorls, marked with fine, close spiral striae, becoming coarser on the base. The suture is deep and oblique. The outer lip is flexuous, retreating, sinuated above. It is smooth within. The columellar tooth shows only a slight obscure fold. There is no umbilicus or a very small umbilical chink.^[4]

Distribution

This species occurs in the following locations:^[2]

• European waters (from South Scandinavia to the Bay of Biscay)
• Portuguese Exclusive Economic Zone
• Spanish Exclusive Economic Zone
• United Kingdom Exclusive Economic Zone
• Mediterranean Sea
• Atlantic Ocean : Madeira., Canary Islands

References

• Templado, J. and R. Villanueva 2010 Checklist of Phylum Mollusca. pp. 148–198 In Coll, M., et al., 2010. The biodiversity of the Mediterranean Sea: estimates, patterns, and threats. PLoS ONE 5(8):36pp.
• van Aartsen J. J., 1987 : European Pyramidellidae: III. Odostomia and Ondina, Bollettino Malacologico, 23 (1-4): 1-34

Ondina obliqua é uma espécie de molusco pertencente à família Pyramidellidae.

A autoridade científica da espécie é Alder, tendo sido descrita no ano de 1844.

Trata-se de uma espécie presente no território português, incluindo a zona económica exclusiva.

Referências

• Ondina obliqua - World Register of Marine Species (consultado em 29 de dezembro de 2013).