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General Information

COMMON NAMES: Common False-limpet, Common Siphon-shell GLOBAL DISTRIBUTION: NATIVE Indigenous throughout Indo - Pacific, including Southeastern Polynesia and Hawai‘i. COOK ISLANDS STATUS: Native; Marine, near-shore, intertidal KEY FEATURES: A simple bowl-shaped shellfish, to 15x10mm and 5mm high. Dark grey. Spaced ribs, one notably larger forming a distinct channel; fine riblets between. Interior centrally dark, ringed white with radiating dark bars near edge. SIMILAR SPECIES: Fine-ribbed Flase-limpet (Siphonaria atra) has uniform, evenly-spaces, very fine radiating ribs.

Cook Islands Distribution

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Southern Group: Present    Makatea:
RR	MG	AT	MK	MT	AK	PL	TK	MN

Northern Group:
TN	MH	RK	PK	NS	SW

Siphonaria normalis Gould, 1846
SYNONYMS: Siphonaria amara

TAXONOMY: ANIMALIA; MOLLUSCA; GASTROPODA; PULMONATA; Basommatophora; Siphonariacea; SIPHONARIIDAE

GENERAL NOTE: This limpet-like shellfish has a lung for breathing air, and a gill for extracting oxygen from water. It lives intertidally and roams around to feed on plant material on the rocks. It returns to its home, a scar where it can seal itself to prevent dehydration while the tide is out.

Vouchers:
Cooks: Morgan 765

References:
None recorded.

Data Update History (information):
zB02, zD02

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