Ferrissia neozelanica

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

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Hygrophila
Superfamily:
Planorboidea
Family:
Planorbidae
Subfamily:
Bulininae
Tribe:
Miratestini
Genus:
Ferrissia
Species:
F. neozelanica
Binomial name
Ferrissia neozelanica
(Suter, 1905)[2]
Synonyms
  • Ferrissia (Kincaidilla) neozelanica (Suter, 1905) ยท accepted, alternate representation
  • Gundlachia neozelanica Suter, 1905

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.

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References

This article incorporates public domain text from the reference[4]

  1. Collier K. (2013). "Ferrissia neozelanicus". The IUCN Red List of Threatened Species. IUCN. 2013: 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.
  3. Clark S. (2011). "Gundlachia neozelanica". The IUCN Red List of Threatened Species. IUCN. 2011: e.T188877A8656370. doi:10.2305/IUCN.UK.2011-2.RLTS.T188877A8656370.en. Retrieved 11 January 2018.
  4. Suter H. (1913). Manual of the New Zealand Mollusca. Wellington.
  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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