Myosotella myosotis

Myosotella myosotis, common name the mouse ear snail, is a European species of small salt marsh snail, a terrestrial pulmonate gastropod mollusk in the family Ellobiidae.

Myosotella myosotis
live Myosotella myosotis
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia

clade Euthyneura
clade Panpulmonata

clade Eupulmonata
Superfamily:
Ellobioidea
Family:
Ellobiidae
Genus:
Myosotella
Species:
M. myosotis
Binomial name
Myosotella myosotis
(Draparnaud, 1801)
Synonyms

see "List of Synonyms"

Description

For terms see gastropod shell.

The shell is yellowish to brownish, smooth or with fine striation. It is shiny. There are 7-8 slightly convex whorls. The apertural margin is white and usually with a white layer at the parietal side. The parietalis is very strong and horizontal and often a small second parietalis is present. The columellaris is strong and the umbilicus is usually covered. The form denticulata has 3-6 short and thin folds (like drops) near the palatal margin at the inner lip.

Photo of the shell
Drawing of the shell

Molecular phylogenetics

The complete nucleotide sequence of the mitochondrial genome of Myosotella myosotis has been available since 2008.[1]

Distribution

As a native snail this species is found in the following countries and islands:

  • Belgium
  • Netherlands
  • Great Britain
  • Ireland
  • Mediterranean Sea coasts (Spain, Italy, Istria, Dalmatia, Albania, Greece, West and South Turkey), West European coasts to Ireland and Scotland, Black Sea, North Germany (and Baltic Sea).[2]

As an exotic, this species is found on:

Description

The maximum recorded shell length is 12 mm.[3]

Habitat

This species lives right at sea level (at the highest high-tide level), and so therefore the minimum recorded depth for this species is 0 m, and the maximum recorded depth is 0 m.[3]

Synonyms
  • Alexia (Auricula) myosotis (Draparnaud, 1801)
  • Alexia (Auricula) myosotis var. hiriarti de Folin, 1889
  • Alexia (Leuconia) micheli var. elongata Pallary, 1900
  • Alexia (Leuconia) micheli var. incrassata Pallary, 1900
  • Alexia algerica Bourguignat, 1864
  • Alexia balearica Dohrn & Heynemann, 1862
  • Alexia cossoni Bourguignat, 1887
  • Alexia enhalia Bourguignat, 1887
  • Alexia loweana Pfeiffer, 1866
  • Alexia myosotis (Draparnaud, 1801)
  • Alexia myosotis var. varicosa Fenaux, 1939
  • Alexia obsoleta Pfeiffer, 1854
  • Alexia parva Locard, 1893
  • Alexia pechaudi Bourguignat, 1887
  • Auricula (Alexia) meridionalis Brazier, 1877
  • Auricula biasolettiana Küster, 1844
  • Auricula botteriana Philippi, 1846
  • Auricula ciliata Morelet, 1845
  • Auricula dubia Cantraine, 1835
  • Auricula kutschigiana Küster, 1844
  • Auricula meridionalis Brazier, 1877
  • Auricula microstoma Küster, 1844
  • Auricula myosotis Draparnaud, 1801
  • Auricula myosotis var. adriatica Küster, 1844
  • Auricula myosotis var. elongata Küster, 1844
  • Auricula tenella Menke, 1830
  • Auricula veneta Martens, 1884
  • Auricula venetiensis Megerle von Mühlfeld in Villa A. & G.B., 1841
  • Auricula vespertina Morelet, 1860
  • Auricula watsoni Wollaston, 1878
  • Melampus turritus W. G. Binney, 1859(junior synonym)
  • Melampus gracilis Lowe, 1832
  • Myosotella denticulata (Montagu, 1803) ·
  • Ovatella myosotis (Draparnaud, 1801)
  • Ovatella myosotis salentina Palazzi & Curini Galletti, 1982
  • Phytia letourneuxi var. tanousi Pallary, 1912
  • Phytia myosotis (Draparnaud, 1801)
  • Tralia (Alexia) myosotis (Draparnaud, 1801)
  • Tralia (Alexia) myosotis f. junior Dall, 1885
  • Voluta denticulata Montagu, 1803 (original combination)
  • Voluta ingens W. Turton, 1819
  • Voluta reflexa W. Turton, 1819
  • Voluta ringens W. Turton, 1819

References
  1. Grande C., Templado J. & Zardoya R. (2008). "Evolution of gastropod mitochondrial genome arrangements". BMC Evolutionary Biology 2008, 8: 61. doi:10.1186/1471-2148-8-61
  2. Welter-Schultes F. W. (2012). European non-marine molluscs, a guide for species identification. Bestimmungsbuch für europäische Land- und Süsswassermollusken. Planet Poster Editions, Göttingen. ISBN 978-3-933922-75-5. 72 (range map Europe)
  3. Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. doi:10.1371/journal.pone.0008776.
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