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Durgella

From Wikipedia, the free encyclopedia

Durgella
A snail of Durgella russeola
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Helicarionidae
Subfamily: Durgellinae
Tribe: Durgellini
Genus: Durgella
W. T. Blanford, 1863
Type species
Helix levicula
W. H. Benson, 1859
Species[1]

See text

Synonyms[1]
  • Macrochlamys (Durgella) W. T. Blanford, 1863
  • Nanina (Durgella) W. T. Blanford, 1863

Durgella is a genus of glass snails in the subfamily Durgellinae of the family Helicarionidae. [2]

Description

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The Additional and Principal Characters of the Genus Durgella (description by H.H. Godwin-Austen)

1. The right and left mantle-lobes moderate, the shell-lobes very ample; the right shell-lobe extends from the anal aperture (close to the upper angle of the shell-aperture) to the columellar margin, and spreads away over the shell in a broad triangular tongue; the left shell-lobe is reflected slightly over the edge of the shell in front, from near the respiratory orifice, and becomes wider on the lower margin as it approaches the umbilicus, and is also of triangular shape when extended. A large portion of the shell is always exposed.

2. The mucous pore is well developed, with a large overhanging lobe.

3. The jaw is very thin, membranaceous, almost straight on the margin, with a very slight central projection.

4, The odontophore is broader than long, with a central minute, tricuspid tooth; the lateral teeth all similar, minutely 6-cuspid or pectiniform, on a curved edge, very closely set together and exceedingly numerous. 170—1—170+.

5. In generative organs, an amatorial organ present in the Burmese form is absent in the Indian.

6. Shell thin or membranaceous, globose or depressedly conoid; polished, very closely perforate, the columellar margin having no solidity.[3]

Distribution

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Species of this genus have been found in Southeast Asia.[1]

Species

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Synonyms
  • Durgella dekhanensis Godwin-Austen, 1898: synonym of Satiella dekhanensis (Godwin-Austen, 1898) (original combination)
  • Durgella levidensis Godwin-Austen, 1898: synonym of Satiella levidensis (Godwin-Austen, 1898) (original combination)
  • Durgella pusilla (E. von Martens, 1867): synonym of Durgella dwipana (Gude, 1903) (invalid; based on preoccupied original name)
  • Durgella sumbaensis Godwin-Austen, 1898: synonym of Helicarion sumbaensis (Godwin-Austen, 1898) (original combination)

References

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  1. ^ a b c "Durgella". MolluscaBase. LifeWatch Belgium. Retrieved 2024-08-11.
  2. ^ MolluscaBase eds. (2024). MolluscaBase. Durgella W. T. Blanford, 1863. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=867817 on 2024-08-13
  3. ^ Godwin-Austen, H.H. (1881). "On the land-molluscan genus Durgella, W. T. Blanford; with notes on its anatomy and description of a new species". Journal of the Linnean Society of London, Zoology. 15 (86): 291–296. doi:10.1111/j.1096-3642.1881.tb00362.x.Public Domain This article incorporates text from this source, which is in the public domain.
  • Bank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16, 2017.
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Media related to Durgella at Wikimedia Commons