Allenella formalis
Allenella formalis | |
---|---|
Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Order: | Stylommatophora |
Family: | Punctidae |
Genus: | Allenella |
Species: | A. formalis
|
Binomial name | |
Allenella formalis | |
Location of Lord Howe Island | |
Synonyms | |
|
Allenella formalis, also known as the brown turban pinhead snail, is a species of land snail that is endemic to Australia's Lord Howe Island in the Tasman Sea.[2]
Description[]
The globosely turbinate shell of the mature snail is 2.5–2.6 mm in height, with a diameter of 3.4–3.6 mm, and a moderately raised conical spire. It is amber to dark brown in colour. The whorls are rounded above and below a slightly angular periphery, with impressed sutures and closely spaced radial ribs. It has an ovately lunate aperture and narrowly open umbilicus. The animal is dark brown with a paler brown sole.[2]
Distribution and habitat[]
The snail occurs on the summits and upper slopes of the island's southern mountains.[2]
References[]
- MolluscaBase eds (2021). "Allenella formalis Iredale, 1944". MolluscaBase. Flanders Marine Institute. Retrieved 2021-08-08.
{{cite web}}
:|author=
has generic name (help)
Categories:
- Allenella
- Gastropods of Lord Howe Island
- Taxa named by Tom Iredale
- Gastropods described in 1944
- Punctoidea stubs