Biology:Durgella
Durgella is a genus of glass snails in the subfamily Durgellinae of the family Helicarionidae. [1]
Description
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.[2]
Distribution
Species of this genus have been found in Southeast Asia.[3]
Species
- Durgella naharaniensis Godwin-Austen, 1916
- (Morelet, 1865) Durgella assamica
- Gondwin-Austen, 1881 Durgella christianae
- (Theobald, 1864) Durgella densestriata
- Vermeulen, T.-S. Liew & Schilthuizen, 2015 (Gude, 1903)
- Godwin-Austen, 1910 (Godwin-Austen, 1888)
- Godwin-Austen, 1891 (Theobald & Stoliczka, 1872)
- Solem, 1966 Godwin-Austen, 1914
- Pholyotha & Panha, 2024 (W. H. Benson, 1859)
- Durgella rhaphiellus Durgella seposita
- Durgella khasiaca Durgella levicula
- Durgella mairangensis Durgella nulla
- (E. von Martens, 1867) (W. H. Benson, 1859)
- Durgella dwipana Durgella edeana
- Durgella erratica Durgella hosei
- Godwin-Austen, 1883 (W. H. Benson, 1859)
- Godwin-Austen, 1898 Pholyotha & Panha, 2024
- Godwin-Austen, 1907 Möllendorff, 1902
- B. Rensch, 1930 Durgella salius
- Durgella siamensis Durgella russeola
- Durgella sundana Durgella rogersi
- Durgella aborense Durgella kumahensis
- Durgella libas Durgella pentata
- 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
- ↑ 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
- ↑ 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. https://www.biodiversitylibrary.org/page/38644562.
This article incorporates text from a publication now in the public domain:
- ↑ "Durgella". LifeWatch Belgium. https://www.molluscabase.org/aphia.php?p=taxdetails&id=867817.
- Bank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16, 2017.
External links
- Blanford, W.T. (1863). "On Indian species of land-shells belonging to the genera Helix, Linn., and Nanina, Gray.". The Annals and Magazine of Natural History 3 (11 (62)): 81–86. https://www.biodiversitylibrary.org/page/22221535.
- Burton, D.W. (1982). "How to be sluggish.". Tuatara 25 (2): 48–64. https://nzetc.victoria.ac.nz/tm/scholarly/tei-Bio25Tuat02-t1-body-d2.html.
- Godwin-Austen, H.H. (1862–1920). Land and freshwater Mollusca of India, including South Arabia, Baluchistan, Afghanistan, Kashmir, Nepal, Burmah, Pegu, Tenasserim, Malay Peninsula, Ceylon, and other islands of the Indian Ocean. Supplementary to Messrs. Theobald and Hanley's Conchologia Indica.. London: Taylor & Francis. https://www.biodiversitylibrary.org/page/13069144.
Wikidata ☰ Q21769895 entry
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