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Helicidae
Helicidae is a large, diverse family of small to large, air-breathing land snails, sometimes called the "typical snails." A number of species in this family are valued as food items, including ''Cornu aspersum'' (formerly ''Helix aspersa'') the brown or garden snail, and ''Helix pomatia'' the "escargot". The biologies of these two species in particular have been thoroughly studied and documented. Shell description The shells of these snails are mostly rather globular in shape. In some genera, such as ''Cepaea'', the shells are brightly colored and patterned. Anatomy The animal is capable of complete retraction within the shell. The tail is without a mucous gland or projection. Tryon G. W. 1887 ''Manual of conchology; structural and systematic. With illustrations of the species''. Second series: PulmonataVolume 3 Helicidae - Volume I. pag3€“4. The mouth is always provided with a jaw, which is striate, ribbed, sulcate or plicate, sometimes composed of several imbricating piece ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Washington Tryon
George Washington Tryon Jr. (20 May 1838 – 5 February 1888) was an American malacologist who worked at the Academy of Natural Sciences in Philadelphia. Biography George Washington Tryon was the son of Edward K. Tryon and Adeline Savidt. In 1853 he attended the Friends Central School in Philadelphia. In 1859, Tryon became a member of the Academy of Natural Sciences of Philadelphia. He was largely responsible for the construction of new buildings for the Academy, especially, in 1866, a section for malacology. In 1869 he became the conservator in this malacological section. In 1865, together with a group of American malacologists, he founded (and financed) the American Journal of Conchology. This ended in 1872. In 1879 he started the ''Manual of Conchology; structural and systematic; with illustrations of the species'', volume 1, series 1. When he died, nine volumes of the first series had been published. From 1887 until 1888, his assistant was Henry Augustus Pilsbry. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornu Aspersum
''Cornu aspersum'' (syn. ''Cryptomphalus aspersus''), known by the common name garden snail, is a species of land snail in the family Helicidae, which includes some of the most familiar land snails. Of all terrestrial molluscs, this species may well be the most widely known. It was classified under the name ''Helix aspersa'' for over two centuries, but the prevailing classification now places it in the genus ''Cornu''. The snail is relished as a food item in some areas, but it is also widely regarded as a pest in gardens and in agriculture, especially in regions where it has been introduced accidentally, and where snails are not usually considered to be a menu item. Description The adult bears a hard, thin calcareous shell in diameter and high, with four or five whorls. The shell is variable in coloring and shade of color, but generally it has a reticulated pattern of dark brown, brownish-golden, or chestnut with yellow stripes, flecks, or streaks (characteristically interr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allognathus
''Allognathus'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Helicidae, the true snails. The genus is endemic to the Balearic Islands (Western Mediterranean) being present in all major islands and in several small islets. The genus colonized the archipelago from the south-eastern Iberian Peninsula during the Middle Miocene, throughout a land-bridge connection. The different species belonging to ''Allognathus'' live in crevice rocks or under stones. For some authors, ''Allognathus'' include two subgenus, ''Allognathus s. str.'', that is monospecific, and ''Iberellus'' Hesse 1908, that includes at least two species. Species Species within the genus ''Allognathus'' include: *'' Allognathus campanyonii'' (Rossmässler, 1839) *'' Allognathus graellsianus'' (Pfeiffer, 1848) - type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cepaea
''Cepaea'' is a genus of medium-sized air-breathing land snails, terrestrial molluscs, terrestrial pulmonate gastropod mollusks in the family Helicidae. The shells of species within this genus are often brightly colored and patterned with stripes. The two species from this genus, the common and widespread ''C. nemoralis'' and ''C. hortensis'', have been model species for early studies of genetics and natural selection. They occur in Europe, although introduced populations occur elsewhere in the world. Like many Helicidae, this genus of snails create and use love darts. Species For a long time, four species were classified in the genus ''Cepaea''. However, Molecular phylogenetics, molecular phylogenetic studies suggested that the latter two should be placed in the unrelated genera ''Macularia'' and ''Caucasotachea'': * ''White-lipped snail, Cepaea hortensis'' (O. F. Müller, 1774) – white-lipped snail or garden banded snail * ''Grove snail, Cepaea nemoralis'' (Linnaeus, 1758) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Love Dart
A love dart (also known as a gypsobelum, shooting darts, or just as darts) is a sharp, calcareous or chitinous dart which some hermaphroditic land snails and slugs create. Love darts are both formed and stored internally in a dart sac. These darts are made in sexually mature animals only, and are used as part of the sequence of events during courtship, before actual mating takes place. Darts are quite large compared to the size of the animal: in the case of the semi-slug genus ''Parmarion'', the length of a dart can be up to one fifth that of the semi-slug's foot. The process of using love darts in snails is a form of sexual selection. Prior to copulation, each of the two snails (or slugs) attempts to "shoot" one (or more) darts into the other snail (or slug). There is no organ to receive the dart; this action is more analogous to stabbing, or to being shot with an arrow or flechette. The dart does not fly through the air to reach its target, but is "fired" as a contact shot. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudotachea
''Pseudotachea'' is a genus of medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Helicinae of the family Helicidae.MolluscaBase eds. (2021). MolluscaBase. Pseudotachea C. R. Boettger, 1909. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=996426 on 2021-02-10 Like many Helicidae, this genus of snails create and use love darts. Species * ''Pseudotachea liturata'' (L. Pfeiffer, 1851) * ''Pseudotachea splendida ''Pseudotachea'' is a genus of medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Helicinae of the family Helicidae.MolluscaBase eds. (2021). MolluscaBase. Pseudotachea C. R. Boettger, 1909. Accessed ...'' (Draparnaud, 1801) ;Species inquirendum: * †''Pseudotachea torresi'' (Roman, 1907) ;Species brought into synonymy: * ''Pseudotachea cotteri'' (Roman, 1907) †: synonym of '' Megalotachea cotteri'' (Roman, 1907) â ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemicycla
''Hemicycla'' is a genus of medium-sized air-breathing land snails, terrestrial pulmonate gastropods in the family Helicidae, the typical snails. MolluscaBase eds. (2021). MolluscaBase. Hemicycla Swainson, 1840. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=996423 on 2021-02-27 Species Species within the genus ''Hemicycla'' include: * ''Hemicycla adansoni'' P.B. Webb & S. Berthelot, 1833 * '' Hemicycla berkeleii'' (R. T. Lowe, 1861) * '' Hemicycla bethencourtiana'' (Shuttleworth, 1852) * '' Hemicycla bidentalis'' (Lamarck, 1822) * '' Hemicycla cardiobola'' (J. Mabille, 1882) †* '' Hemicycla collarifera'' O. Boettger, 1908 †* '' Hemicycla consobrina'' (A. Férussac, 1822) * †'' Hemicycla desculpta'' (Mousson, 1872) * '' Hemicycla diegoi'' Neiber, R. Vega-Luz, R. Vega-Luz & Koenemann, 2011 * †'' Hemicycla digna'' (Mousson, 1872) * '' Hemicycla distensa'' (Mousson, 1872) * '' Hemicycla efferata'' (Mousson, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helix (gastropod)
''Helix'' is a genus of large, air-breathing land snails native to Europe and the Mediterranean region. They are the type genus of the family Helicidae, and are among the first animal genera described by Carl Linnaeus.Rosenberg, G.; Bouchet, P. (2014). ''Helix'' Linnaeus, 1758. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=153970 on 2015-02-24 Members of the genus first appeared during the Oligocene. Like most land snails, ''Helix'' species are hermaphroditic, and like other helicids, a courting pair will impale each other with hormone-rich love darts prior to exchanging sperm. Well-known species include ''Helix pomatia'' (Roman snail, Burgundy snail, or edible snail) and '' Helix lucorum'' (Turkish snail). ''Cornu aspersum'' (garden snail) – another well-known helicid – was originally described as a member of ''Helix'' (as "''Helix aspersa''"), but the prevailing classification places it as the sole member of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iberus
''Iberus'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Helicinae of the family Helicidae. MolluscaBase eds. (2021). MolluscaBase. Iberus Montfort, 1810. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=996424 on 2021-02-14 This genus is endemic to the Iberian Peninsula. Species and subspecies According to the ''Fauna Europaea'' this genus contains the following species and subspecies: * ''Iberus alonensis'' (A. FĂ©russac, 1821) * '' Iberus angustatus'' (Rossmässler, 1854) * '' Iberus calaensis'' Ahuir, 2013 * '' Iberus campesinus'' (L. Pfeiffer, 1846) * '' Iberus candoni'' Ahuir, 2021 * '' Iberus carthaginiensis'' (Rossmässler, 1853) * †'' Iberus delgadoi'' (Roman, 1907) * ''Iberus gualtieranus'' (Linnaeus, 1758 Events January–March * January 1 – Swedish biologist Carl Linnaeus (Carl von LinnĂ©) publishes in Stockholm the first volum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iberus Gualterianus Alonensis3
''Iberus'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Helicinae of the family Helicidae. MolluscaBase eds. (2021). MolluscaBase. Iberus Montfort, 1810. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=996424 on 2021-02-14 This genus is endemic to the Iberian Peninsula. Species and subspecies According to the ''Fauna Europaea'' this genus contains the following species and subspecies: * '' Iberus alonensis'' (A. Férussac, 1821) * ''Iberus angustatus'' (Rossmässler, 1854) * '' Iberus calaensis'' Ahuir, 2013 * '' Iberus campesinus'' (L. Pfeiffer, 1846) * ''Iberus candoni'' Ahuir, 2021 * ''Iberus carthaginiensis'' (Rossmässler, 1853) * †''Iberus delgadoi'' (Roman, 1907) * ''Iberus gualtieranus'' (Linnaeus, 1758) :''Iberus gualtieranus alonensis'' :''Iberus gualtieranus campesinus'' :''Iberus gualtieranus carthaginiensis'' :''Iberus gualtieranus gualterianus'' :' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helix Pomatia
''Helix pomatia'', common names the Roman snail, Burgundy snail, or escargot, is a species of large, edible, air-breathing land snail, a pulmonate gastropod terrestrial mollusc in the family Helicidae.MolluscaBase eds. (2021). MolluscaBase. Helix pomatia Linnaeus, 1758. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=1050286 on 2021-02-19 It is one of Europe's biggest species of land snail. Distribution Distribution of ''H. pomatia'' includes: Southeastern and Central Europe: * Germany – listed as a specially protected species in annex 1 of the Bundesartenschutzverordnung. * Austria * Czech Republic – least concern species (LC): Its conservation status in 2004–2006 is favourable (FV) in the report for the European Commission in accordance with the Habitats Directive. * Poland * Slovakia * Hungary * Romania * In southwestern Bulgaria up to an altitude more than 1600 m. * Northern and central Balkans * Slove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Snail
A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as slugs). However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water. Land snails are a polyphyletic group comprising at least ten independent evolutionary transitions to terrestrial life (the last common ancestor of all gastropods was marine). The majority of land snails are pulmonates that have a lung and breathe air. Most of the non-pulmonate land snails belong to lineages in the Caenogastropoda, and tend to have a gill and an operculum. The largest clade of land snails is the Cyclophoroidea, with more than 7,000 species. Many of these operculate land snails live in habitats or microhabitats ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
