Innesoconcha segna

Innesoconcha segna
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Superfamily: Trochomorphoidea
Family: Microcystidae
Genus: Innesoconcha
Species:
I. segna
Binomial name
Innesoconcha segna
Location of Lord Howe Island

Innesoconcha segna, also known as the pale glass-snail, is a species of land snail that is endemic to Australia's Lord Howe Island in the Tasman Sea.[2]

Taxonomy

I. segna is sometimes considered to be a junior synonym of I. catletti. However, the two forms exhibit differences in their shells as well as their genital anatomy, and they are treated as separate species by Hyman & Köhler (2020).[2]

Description

The depressedly trochoidal shell of the mature snail is 5.9–7.8 mm in height, with a low spire and a diameter of 10.7–12 mm. It is glossy and pale golden-yellow in colour The whorls are rounded, with finely incised spiral grooves. It has an ovately lunate aperture and closed umbilicus. The body of the animal (in alcohol) is light orange-brown.[2]

Distribution and habitat

The snail is evidently very rare and known only from the localities of Boat Harbour and Rocky Run Creek on the island. It has only been collected in low numbers, and may be extinct.[2]

References

  1. ^ Iredale, Tom (1944). "The land Mollusca of Lord Howe Island". Australian Zoologist. 10 (3): 299–334.
  2. ^ a b c d Hyman, Isabel; Köhler, Frank (2020). A Field Guide to the Land Snails of Lord Howe Island. Sydney: Australian Museum. ISBN 978-0-9750476-8-2.
  • Iredale, 1944 (2021). "Innesoconcha segna". MolluscaBase. Flanders Marine Institute. Retrieved 2021-08-03.{{cite web}}: CS1 maint: numeric names: authors list (link)

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