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Aplustrum amplustre (Linnaeus, 1758)

Description: Shell light in weight, inflated, spire elevated. Shell surface smooth and glossy, covered with a thin, transparent periostracum. Aperture wide, outer lip thin and sharp, inner lip with thin colourless transparent glaze on parietal wall. Colour white with 2 broad, pink bands edged with black.

Size: Up to 24 mm in length.

Distribution: Throughout the tropical Indo-West Pacific. In eastern Australia, moderately common as far south as Coffs Harbour, NSW, rarely to Sydney, and one anomalous record from Merimbula Lake, NSW (Rudman, 1999).

Habitat: Intertidal. It is reported to feed on cirratulid polychaete worms (Rudman, 1972).

Remarks: The Sea Slug Forum provides a good illustration of the animal (http://www.seaslugforum.net/find/hydaampl)

Fig. 1: Minnie Waters, east of Grafton, NSW. (C.094651).


Copyright Des Beechey 2017