Diloma arida

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Diloma arida
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Prosobranchia
Order: Archaeogastropoda
Superfamily: Trochacea
Family: Trochidae
Genus: Diloma
Species: D. arida
Binomial name
Diloma arida
(Finlay, 1927)
Synonyms

Monodonta coracina Suter, 1913
Zediloma arida Finlay, 1927

Diloma arida is a top shell, a marine gastropod mollusc in the family Trochidae.

Contents

[edit] Distribution

This top shell is endemic to New Zealand, including the Chatham, Auckland and Campbell islands.

[edit] Habitat

This species is common in the upper intertidal zone in sheltered rocky situations.

[edit] Shell description

The shell is solid, globose-conoid, with flattened sides and a subangulate periphery, smooth except for weak spiral lirae.

Coloration is purplish-black, sparsely spotted on the last whorl, in white or yellowish. The interior of the aperture is reddish-iridescent.

Maximum height is 19 mm, and width 17 mm.

[edit] References