Ferrissia neozelanica

Ferrissia neozelanica
Conservation status
	; Least Concern (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Superorder:	Hygrophila
Family:	Planorbidae
Genus:	Ferrissia
Species:	F. neozelanica
Binomial name
	Ferrissia neozelanica; (Suter, 1905)
Synonyms
	Ferrissia (Kincaidilla) neozelanica (Suter, 1905) · accepted, alternate representation; Gundlachia neozelanica Suter, 1905;

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.

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

Shell 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

These 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

This freshwater limpet is endemic to the South Island of New Zealand.^[5]

Habitat

These tiny limpets are found attached to stems and undersides of leaves of aquatic plants in quiet waters.

References

This 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

External links

Spencer H.G., Willan R.C., Marshall B.A. & Murray T.J. (2011). Checklist of the Recent Mollusca Recorded from the New Zealand Exclusive Economic Zone

[IUCN_2013-1] 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.

[2] Suter H. (1904). "The First-discovered New Zealand Gundlachia". Transactions and Proceedings of the New Zealand Institute 37: 258.

[iucn-3] 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.

[Suter-4] Suter H. (1913). Manual of the New Zealand Mollusca. Wellington.

[Powell-5] Powell A. W. B. (1979). New Zealand Mollusca. William Collins Publishers Ltd, Auckland, New Zealand, ISBN 0-00-216906-1

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