Madagasikara spinosa

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Madagasikara spinosa
Madagasikara spinosa

Near Threatened  (IUCN 3.1)[1]
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
clade Sorbeoconcha
Superfamily:
Cerithioidea
Family:
Pachychilidae
Genus:
Madagasikara
Species:
M. spinosa
Binomial name
Madagasikara spinosa
(Lamarck, 1822)[2]
Synonyms[4]
  • Pirena spinosa Lamarck, 1822
  • Melanopsis spinosa
  • Pirena (Melanatria) spinosa
  • Melanatria fluminea (Gmelin, 1791)
  • Melanatria spinosa
  • Melanopsis lamarckii Potiez & Michaud, 1838
  • Pirena lamarckii
  • Pirena fluminea Reeve, 1859[3]
  • Melanatria fluminea
  • Pirena maura Reeve, 1859
  • Pirena lingulata Reeve, 1859
  • Pirena aspera Brot, 1862
  • Melanatria goudotiana Brot, 1879 in Brot, 1874-79

Madagasikara spinosa is a

mollusc in the family Pachychilidae.[4]

Madagasikara spinosa is the type species of the genus Madagasikara.[4]

Distribution

This species is

Île Sainte-Marie.[4]

The

type locality is "Dans le rivières de l’ile de Madagascar", in rivers of Madagascar.[4]

Description

Shells of Madagasikara spinosa.

The shell is elongate and large and it has 5.0-11.0 whorls.[4] The color of the shell is from brown to black.[4] The apex is truncated.[4] There are axial ribs especially on upper whorls.[4] The aperture is widely oval with palatal and basal sinus.[4]

The width of the shell is 9.9-28.3 mm.[4] The height of the shell is 25.2-69.5 mm.[4] The width of the aperture is 5.0-18.4 mm.[4] The height of the aperture is 8.0-23.1 mm.[4]

The operculum is oval and black.[4]

The color of the animal is dark grey to black with yellowish dots.

Tentacles are quite long.[4] Radula is taeniglossate.[4] Radula is about 16 mm long with about 127 rows of teeth.[4]

Ecology

It lives in fast running streams.[4]

Sexes are separate (

oviparous).[4]

References

  1. doi:10.2305/IUCN.UK.2016-3.RLTS.T91353068A91353128.en
    . Retrieved 14 November 2021.
  2. ^ Lamarck J. B. (1822). Histoire naturelle des animaux sans vertèbres. Paris, J. B. Baillière. page 172.
  3. ^ Reeve L. A. (1859). Pirena. In: Reeve L. A. (ed.) Conchologia iconica. London, Reeve. 12: plate 2, figure 6-7, figure 9-10.
  4. ^
    doi:10.1111/j.1095-8312.2009.01390.x
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