''Dignamoconcha'' is a monotypic genus of pinhead or dot snails that is endemic to

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

's Lord Howe Island in the Tasman Sea.

Species

* '' Dignamoconcha dulcissima'' Iredale, 1944 – the pagoda pinhead snail

Description

The trochoidal shell of the mature snail is 3.3 mm in height, with a diameter of 5.7 mm, with a stepped, pagoda-like spire. It is pale golden-brown in colour, with white radial streaks. The whorl profile is flattened above and below a strongly keeled periphery. It has a diamond-shaped aperture and widely open umbilicus. It is the largest known punctid in Australia.

Distribution and habitat

Although the snail is sometimes reported from other sites on the island, its main area of occurrence is on the slopes of the southern mountains, at altitudes of 200–600 m in

rainforest Rainforests are characterized by a closed and continuous tree canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforest can be classified as tropical rainforest or temperate rainfores ...

, where it is arboreal and found on the undersides of green leaves, especially those of palms.

References

* Punctidae Monotypic gastropod genera Taxa named by Tom Iredale Gastropods described in 1944 Gastropods of Lord Howe Island {{Punctidae-stub