Ferrissia neozelanica, also known as Gundlachia neozelanica, is a species of minute freshwater limpet, an aquatic pulmonate gastropod mollusk, or micromollusk, in the family Planorbidae.
| Ferrissia neozelanica | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Superorder: | Hygrophila |
| Family: | Planorbidae |
| Genus: | Ferrissia |
| Species: | F. neozelanica
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| Binomial name | |
| Ferrissia neozelanica | |
| Synonyms | |
| |
As of 2014, this species was listed in the IUCN Red list twice: as Gundlachia neozelanica - data deficient[3] and as Ferrissia neozelanicus - least concern.[1]
Shell description
editShell depressed conoidal, oval-oblong, the sides straightened, subparallel, thin, semitransparent, horn-colour, with a blackish-green coating. Apex a little inclined to the right, situated at the posterior sixth of the length, flatly convex anteriorly; concentric lines of growth at regular intervals. Interior light brown, shining. Aperture is elongated oval, slightly broadened anteriorly. Specimens have been found with the septum partly formed, but not adult.[4]
The shell length is up to 3 mm, the width up to 2 mm, and height up to 0.75 mm.[5]
Anatomy
editThese animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch". This serves as a gill as these limpets may sometimes not be able to reach the surface for air.
Distribution
editThis freshwater limpet is endemic to the South Island of New Zealand.[5]
Habitat
editThese tiny limpets are found attached to stems and undersides of leaves of aquatic plants in quiet waters.
References
editThis article incorporates public domain text from the reference[4]
- ^ a b Collier K. (2013). "Ferrissia neozelanicus". The IUCN Red List of Threatened Species. 2013. IUCN: e.T198829A14188564. doi:10.2305/IUCN.UK.2013-2.RLTS.T198829A14188564.en. Retrieved 11 January 2018.
- ^ Suter H. (1904). "The First-discovered New Zealand Gundlachia". Transactions and Proceedings of the New Zealand Institute 37: 258.
- ^ Clark S. (2011). "Gundlachia neozelanica". The IUCN Red List of Threatened Species. 2011. IUCN: e.T188877A8656370. doi:10.2305/IUCN.UK.2011-2.RLTS.T188877A8656370.en. Retrieved 11 January 2018.
- ^ a b Suter H. (1913). Manual of the New Zealand Mollusca. Wellington.
- ^ a b Powell A. W. B. (1979). New Zealand Mollusca. William Collins Publishers Ltd, Auckland, New Zealand, ISBN 0-00-216906-1