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Ziba gambiana Dohrn, 1861

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Obrázky

Ziba gambiana

Autor: Cernohorsky, W.O.

Ziba gambiana

Autor: Cernohorsky, W.O.

Taxon v check-listech zemí*

* Výčet zemí nemusí být kompletní

EN  

Popis

Shell up to 32.0 mm in length, whorls sloping or subangulate on presutural ramp, teleoconch of 7-8 convex whorls, protoconch of 3 smooth, conical glassy-white or purplish embryonic whorls. Post-embryonic whorls with c. 4 low, narrow and flattish spiral cords, interspaces finely punctate, penultimate whorl with axially striate grooves which produce 5-7 low, flattened or slightly more cord-like spiral cords, body whorl with either up to 26 spiral cords in some young specimens or shallow spiral grooves in more mature adults; the interspaces are punctate or axially striate and striae may weakly override cords. Aperture equal in height or longer than the spire, smooth within, outer lip moderately thickened, simple or weakly crenulate, columella narrowly calloused and with 3-5 folds, siphonal notch distinct, siphonal canal straight. White to fawn in color under a dark brown or orange-brown, opaque periostracum, aperture white.
Cernohorsky, W.O., 1991. The Mitridae of the World. Part II. The Subfamily Mitrinae Concluded and Subfamilies Imbricariinae and Cylindromitrinae..

Možné záměny

This species is rather similar to Z. carinata but lacks the elevated carina on the whorls and the sculpture consists of spiral cords or grooves. The spiral cords are always well developed on the body whorl in young specimens but become obsolete and are replaced by grooves in adults.
Cernohorsky, W.O., 1991. The Mitridae of the World. Part II. The Subfamily Mitrinae Concluded and Subfamilies Imbricariinae and Cylindromitrinae..

Rozšíření

W. Africa; Canary Islands to St. Helena, Atlantic Ocean.
Cernohorsky, W.O., 1991. The Mitridae of the World. Part II. The Subfamily Mitrinae Concluded and Subfamilies Imbricariinae and Cylindromitrinae..

Odkazy a literatura

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [jako Ziba gambiana (Dohrn, 1861)]
Datum citace: 23. listopad 2013

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