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Semi-slug
Semi-slugs, also spelled semislugs, are land gastropods whose shells are too small for them to retract into, but not quite vestigial. The shell of some semi-slugs may not be easily visible on casual inspection, because the shell may be covered over with the mantle. This is a type of gastropod that is intermediate between a slug (without an external shell) and a land snail (with a large enough shell to retract completely into). There exist a number of gastropod families that have semi-slug species.Breure A. S. H. (2010). "The rediscovery of a semi-slug: ''Coloniconcha prima'' Pilsbry, 1933 (Gastropoda, Pleurodontidae) from Hispaniola". ''Basteria'' 74(4-6): 78-86. There exist about 1,000 species of semi-slugs in comparison to about only 500 species of slugs.Burton D. W. (1982). "How to be sluggish". ''Tuatara'' 25(2): 48-63HTM Examples Semi-slugs have a worldwide distribution and have evolved in several families; genera include: * Palearctic and Nearctic ** family Parmacell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Varadia Amboliensis
''Varadia amboliensis'' is a forest-living species of semi-slug belonging to the Helicarionoidea superfamily (taxonomy), superfamily and was discovered in a Maharashtrian section of the Western Ghats in 2021. The species is currently the only member of the newly created genus, ''Varadia,'' named in honor of the Indian conservationist and herpetologist, Varad Giri. The species name is derived from Amboli, Sindhudurg, Amboli, which is the locality where it was Type locality (biology), first identified. Description, Habitat and Behavior ''Varadia amboliensis'' is glossy grey or greyish-white with irregular dark mottling patterns, and up to 6.9 cm long, with a golden-brown Exoskeleton, shell. It is more Nocturnality, active at night, and appears to be Omnivore, omnivorous, as it has been observed feeding on both decaying plant matter as well as smaller invertebrates like Cricket (insect), crickets and earthworms. It is primarily terrestrial, but can be seen on leaves, rocks a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attenborougharion Rubicundus
''Attenborougharion rubicundus'' is a species of air-breathing semi-slug, terrestrial pulmonate gastropod molluscs in the family Helicarionidae. It has been referred to as the "burgundy snail", but should not be confused with ''Helix pomatia'', which is also known by that name. Taxonomy This species was described under the name ''Helicarion rubicundus'' in 1978.Dartnall, A. J., & Kershaw R. C. (1978). "Description of a new species of ''Helicarion'' (Stylommatophora: Helicarionidae) in Tasmania". '' Records of the Queen Victoria Museum'' 62: 1–18. The species was reassigned from genus ''Helicarion'' to ''Attenborougharion'' its own monotypic genus, named after David Attenborough, in 2017 by researchers at the Australian Museum. The description of this genus was formally published on 9 August 2017. Distribution This species is endemic to Australia, and is known only from the Forestier Peninsula and a small portion of the Tasman Peninsula on the island of Tasmania. Descriptio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of many gastropods, including snails, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, ostracum, is typically made of calcium carbonate (CaCO3) precipitated into an organic matrix ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ubiquitarion Iridis
''Ubiquitarion iridis'', the iridescent semi-slug is a tree-dwelling snail in the family Helicarionidae. It is endemic to Australia. This species occurs in and near rainforests in north eastern New South Wales and south eastern Queensland. Accidentally introduced to Sydney and the Central Coast of New South Wales.Michael Shea, Australian Museum The Australian Museum, originally known as the Colonial Museum or Sydney Museum. is a heritage-listed museum at 1 William Street, Sydney, William Street, Sydney central business district, Sydney CBD, New South Wales. It is the oldest natural ... References * Hyman, I. T. (2007). Three new genera and five new species of Helicarionidae from southeastern Australia (Pulmonata: Stylommatophora: Helicarionoidea). Molluscan Research. 27(2): 89–104 External links Hyman I.T., de la Iglesia Lamborena I. & Köhler F. (2017). Molecular phylogenetics and systematic revision of the south-eastern Australian Helicarionidae (Gastropoda, Styl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slug
Slug, or land slug, is a common name for any apparently shell-less Terrestrial mollusc, terrestrial gastropod mollusc. The word ''slug'' is also often used as part of the common name of any gastropod mollusc that has no shell, a very reduced shell, or only a small internal shell, particularly sea slugs and semi-slugs (this is in contrast to the common name ''snail'', which applies to gastropods that have a coiled shell large enough that they can fully retract their soft parts into it). Various Taxonomy (biology), taxonomic families of land slugs form part of several quite different evolutionary lineages, which also include snails. Thus, the various families of slugs are not closely related, despite the superficial similarity in overall body form. The shell-less condition has arisen many times independently as an example of convergent evolution, and thus the category "slug" is Polyphyly, polyphyletic. Taxonomy Of the six orders of Pulmonata, two – the Onchidiacea and Soleoli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucobresia
''Eucobresia'' is a genus of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the family Vitrinidae, the glass snails. Species Species within the genus ''Eucobresia'' include: * ''Eucobresia diaphana'' ( Draparnaud, 1805) * '' Eucobresia glacialis'' * '' Eucobresia nivalis'' ( Dumont & Mortillet, 1854)Dumont F. & Mortillet G. (1852-1854). "Histoire des mollusques terrestres et d'eau douce vivants et fossiles de la Savoie et du Bassin du Léman". '' Bulletin de la Société d'Histoire Naturelle de Savoie'' 1852: 14-142 852 1-78 853 81-152, 239-248 854 __NOTOC__ Year 854 ( DCCCLIV) was a common year starting on Monday of the Julian calendar. Events By place Europe * Emperor Lothair I meets his (half) brothers (Louis the German and Charles the Bald) in Attigny, Ardennes for the third ... Chambéry. page 209. *'' Eucobresia pegorarii'' References Vitrinidae {{Vitrinidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parmarion
''Parmarion'' is a genus of air-breathing land semi-slugs, terrestrial pulmonate gastropod mollusks in the family Ariophantidae. ''Parmarion'' is the type genus of the Parmarioninae, which is a synonym of Ostracolethinae. Species of snails within this family make and use love dart A love dart (also known as a gypsobelum, shooting darts, or just as darts) is a sharp, calcium carbonate, calcareous or chitinous Dart (missile), dart which some hermaphroditic land snails and slugs create. Love darts are both formed and stor ...s. Species Species within the genus ''Parmarion'' include: * '' Parmarion martensi'' Simroth, 1893 * '' Parmarion kersteni'' von Martens, 1869 References Further reading * van Bentham Jutting W. S. S. (1950). "Systematic studies on the non-marine Mollusca of the Indo-Australian Archipelago. II. Critical revision of the Javanese pulmonate land-snails of the families Helicarionidae, Pleurodontidae, Fruticicolidae & Streptaxidae". ''Treubia'' 20: 381- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitrinidae
Vitrinidae is a family (biology), family of small, air-breathing land snails and semi-slugs, terrestrial molluscs, terrestrial pulmonate gastropod mollusc, mollusks in the superfamily Limacoidea (according to the Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).MolluscaBase eds. (2021). MolluscaBase. Vitrinidae Fitzinger, 1833. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=875674 on 2022-02-01 Distribution The distribution of the Vitrinidae includes the Nearctic, western Palearctic, eastern Palearctic, and Ethiopian zones, as well as List of non-marine molluscs of Hawaii, Hawaii. Anatomy Snails in this family make and use love darts made of chitin. In this family, the number of haploid chromosomes lies between 26 and 35 (according to the values in this table).Barker G. M.: Gastropods on Land: ''Phylogeny, Diversity and Adaptive Morphology''. in Barker G. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ratnadvipia
''Ratnadvipia'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Ariophantidae. These snails are endemic to highly fragmented rain forests of Sri Lanka Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, also known historically as Ceylon, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, separated from the Indian subcontinent, .... Sometimes they extend into the dry zones of the island and occasionally found around home gardens. Two species are recognized. Species * '' Ratnadvipia irradians'' (Pfeiffer 1853) * '' Ratnadvipia karui'' Pfeiffer, 1854 References External linksRatnadvipia karui [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicarionidae
Helicarionidae is a family of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the superfamily Helicarionoidea. Distribution The distribution of Helicarionidae includes the eastern Palearctic, Malagasy, India, south-eastern Asia, Hawaii, and Australia. Anatomy Species of snails within this family make and use love darts made of chitin. In this family, the number of haploid chromosomes lies between 21 and 30 (according to the values in this table). Taxonomy The family Helicarionidae is nested within the limacoid clade, as shown in the following cladogram :Hausdorf B. (2000). "Biogeography of the Limacoidea sensu lato (Gastropoda: Stylommatophora): Vicariance Events and Long-Distance Dispersal". '' Journal of Biogeography'' 27(2): 379-390. JSTOR Genera The following genera are recognised in the family Helicarionidae: ;Subfamily Helicarioninae *'' Amenixesta'' *'' Antiquarion'' *'' Attenborougharion'' *'' Bathia'' *'' Brevisent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howearion
''Howearion'' is a genus of two species of helicarionid semislugs that are endemic to Australia’s Lord Howe Island in the Tasman Sea The Tasman Sea is a marginal sea of the South Pacific Ocean, situated between Australia and New Zealand. It measures about across and about from north to south. The sea was named after the Dutch explorer Abel Janszoon Tasman, who in 1642 wa .... Species * '' Howearion belli'' Iredale, 1944 – beautiful semislug * '' Howearion hilli'' (Cox, 1873) – Lord Howe semislug References * Gastropod genera Taxa named by Tom Iredale Gastropods described in 1944 Gastropods of Lord Howe Island {{Helicarionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ibycus (gastropod)
Ibycus is a genus of air-breathing semi-slugs, in the family Helicarionidae Helicarionidae is a family of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the superfamily Helicarionoidea. Distribution The distribution of Helicarionidae includes the eastern Palearctic, Malagasy, ....MolluscaBase eds. (2020). MolluscaBase. Ibycus Heynemann, 1863. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=996359 on 2021-01-12 Species * '' Ibycus albacuminatus'' (P. Sarasin & F. Sarasin, 1899) * '' Ibycus cingulatus'' (B.Rensch, 1930) * '' Ibycus coriaceus'' (P. Sarasin & F. Sarasin, 1899) * '' Ibycus fissidens'' Heynemann, 1863 * '' Ibycus hiraseanus'' (Pilsbry, 1906) * '' Ibycus minutus'' (Godwin-Austen, 1876) * '' Ibycus papuanus'' I. Rensch, 1932 * ''Ibycus perakensis'' (Godwin-Austen, 1909) * ''Ibycus rachelae'' Schilthuizen & Liew, 2008 * ''Ibycus siamensis'' Cockerell, 1891 Ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
