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Tatea huonensis (Tenison-Woods, 1876)

Description: Shell small, variable in length to width ratio (1.78 - 2.28) (Fig. 2), spire straight in outline. Protoconch of 2 whorls, last whorl with 11-15 spiral threads in the periostracum; junction with teleoconch well defined. Teleoconch of up to 6 weakly rounded whorls, smooth except for growth lines. Last whorl rounded or angled at periphery. Aperture oval, with thickened peristome, this sometimes red or orange; outer lip with sharp edge, inner lip thickened. Umbilicus a very small chink. Shell translucent white when fresh, becoming opaque with age, covered with thick dark brown periostracum.

Size: Up to 5 mm in length.

Distribution: Endemic to Australia: Hervey Bay, Qld, southwards and around southern Australia to Perth, WA.

Habitat: Restricted to estuarine environments, especially among mangroves, in the upper third of the intertidal zone. Abundant.

Comparison: See T. rufilabris.

Remarks: The anatomy, radula and distribution of this species is described in detail by Ponder, Colgan & Clark (1991).

Fig. 1: Mogareka Inlet, Bega River, NSW (C.202935)

Fig. 2: Blairs Creek, Manning River, NSW (C.160350). Both specimens.


Copyright Des Beechey 2014