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Taxon profile

species

Littoraria irrorata Say, 1822

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Littorinimorpha »  family Littorinidae - Periwinkles »  genus Littoraria

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Littoraria irrorata

Author: Tunnell et al.

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Description

Littoraria irrorata (Say, 1822) Marsh Periwinkle
Distribution: New Jersey to Florida to Texas. Size: 25 mm (1 inch).
Description: Color whitish-gray with streaks of purple or reddish-brown on spiral cords; shape elongate-conic, thick; sculpture with numerous rounded, somewhat thickened spiral ribs; with 8 to 10 flat-sided whorls; sutures somewhat obscure; body whorl half the height of shell; aperture oval, outer lip strong and sharp with grooves on inner side; operculum corneous.
Habitat: Typically on marsh grass stems and roots at or above high-tide mark; also on hard substrates at or above tide line.
Remarks: Sometimes confused with L. nebulosa, which has a convex body whorl, different columella, and finer spiral ribs. See Bequaert (1943); Andrews (1977). Synonym: Littorina irrorata (Say, 1822).
Tunnell, J.W. , Andrews, J. , Barrera, N.C. & Moretzsohn, F., 2010. Encyclopedia of Texas seashells.
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Littoraria irrorata Say, 1822]
Data retrieved on: 23 November 2013

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