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Letourneuxia Nyctelia
''Letourneuxia nyctelia'' is a species of terrestrial slug, a gastropod mollusc, belonging to the family Arionidae. Taxonomy For many years this species was known as ''Letourneuxia numidica'', described by Bourguignat from Algeria. The other species of ''Letourneuxia'' were synonymised with ''L. numidica'' by Wiktor. These included ''Letourneuxia moreleti'', which Castillejo considered instead to be a species of '' Geomalacus'' (criticised by ). In 2022 it was proposed that Bourguignat's 1861 description of ''Limax nyctelius'' referred to a juvenile of the same species that he described five years later as ''Letourneuxia numidica''. The forward position of the pneumostome is not known in any other North African species, and the stripes match. So the name of this species has now become ''Letourneuxia nyctelia'' (Bourguignat, 1861). The lectotype has been designated as the specimen in the illustration referred to in the original species description. Distribution and ecology The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slug
Slug, or land slug, is a common name for any apparently shell-less 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 semislugs (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 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 a superficial similarity in the overall body form. The shell-less condition has arisen many times independently as an example of convergent evolution, and thus the category "slug" is polyphyletic. Taxonomy Of the six orders of Pulmonata, two – the Onchidiacea and Soleolifera – solely comprise slugs. A third family, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusca
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gastropod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arionidae
Arionidae, common name the "roundback slugs" or "round back slugs" are a taxonomic family of air-breathing land slugs, terrestrial pulmonate gastropod mollusks in the superfamily Arionoidea. Distribution The distribution of this family of slugs includes Nearctic, Palearctic and Oriental regions."Family summary for Arionidae" , last change 12-06-2009, accessed 4 August 2010. Anatomy Unlike some slugs, European Arionidae have no on the back. The |
Jules René Bourguignat
Jules René Bourguignat (19 August 1829, Brienne-le-Château, Brienne-Napoléon, Aube – 7 April 1892) was a French malacologist, a scientist who studied mollusks. He served as secretary-general of the ''Société malacologique de France''. He traveled widely, visiting, for example, Lake Tanganyika and North Africa. He reportedly defined 112 new genera and around 2540 new species of mollusks. Taxa Bourguignat named and described many genera and species of mollusks, including: * ''Aspatharia'' Bourguignat, 1885, a genus of freshwater mussel. * ''Bridouxia'' Bourguignat, 1885, a genus of freshwater snail. * ''Lanistes alexandri'' Bourguignat, 1850, a species of freshwater snail. * ''Reymondia'' Bourguignat, 1885, a genus of freshwater snail. * ''Spekia'' Bourguignat, 1879, a genus of freshwater snail. Spekia Bourguignat, 1879 Bibliography ( ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andrzej Wiktor
Andrzej Wiktor (1931–2018) was a Polish taxonomy (biology), taxonomist of terrestrial slugs. His considerable research output includes a number of comprehensive reviews that document the slug faunas of particular countries or revise the taxonomy of whole family (biology), families. He worked for almost all of his career at the Museum of Natural History, University of Wrocław in Poland. Career Andrzej Hubert Wiktor was born 4 February 1931 in Nowa Wieś, Rzeszów County, Nowa Wieś, near Rzeszów, in south-east Poland. He studied biology at Adam Mickiewicz University in Poznań, Poznań University and then at the University of Wrocław. After completing his doctorate in 1962 while employed at the Wrocław Medical University, the rest of his career was based at the Museum of Natural History, University of Wrocław, of which he became Director in 1980. He also held various other prestigious posts in the university and in other academic organisations (e.g. President of the :pl:Pol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geomalacus
''Geomalacus'' is a genus of large air-breathing land slugs, terrestrial pulmonate gastropod mollusks in the family Arionidae, the roundback slugs. Etymology The Ancient Greek word () means the Earth. The Greek word () means mollusc. Distribution Western Europe Species This genus contains the following species: subgenus '' Geomalacus'' * ''Geomalacus maculosus'' Allman, 1843 - Kerry slug subgenus '' Arrudia'' Pollonera, 1890 Pollonera C. (1890) ''Boll. Mus. Zool. Comp. Torino'', 5, no. 87, 36. * '' Geomalacus anguiformis'' (Morelet, 1845) * '' Geomalacus malagensis'' Wiktor & Norris, 1991 *::known by some as ''Geomalacus moreleti'' (Hesse, 1884) * '' Geomalacus oliveirae'' Simroth, 1891 Description Animal limaciform, subcylindrical, blunt behind, with a but little developed mucous pore; mantle anterior, close to the head, concealing a shell-plate; a distinct locomotive disk; respiratory orifice on the right anterior margin of the mantle; genital orifice behind an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pneumostome
The pneumostome or breathing pore is a respiratory opening of the external body anatomy of an air-breathing land slug or land snail. It is a part of the respiratory system of gastropods. It is an opening in the right side of the mantle of a stylommatophoran snail or slug. Air enters through the pneumostome into the animal's single lung, the air-filled mantle cavity. Inside the mantle cavity the animal has a highly vascularized area of tissue that functions as a lung. The pneumostome is often much easier to see in slugs than in snails, because of the absence of a shell which can often block the view of this area. In a land slug, when the pneumostome is wide open, it is usually very clearly visible on the right side of the animal. However, the position of the pneumostome is often not at all easy to discern when this orifice is completely closed. The pneumostome opens and closes in a cyclical manner. The frequency of pneumostome closing and opening is typically less than 0.5 cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lectotype
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limax Nyctelius Bourguignat 1862
''Limax'' is a genus of air-breathing land slugs in the terrestrial pulmonate gastropod mollusk family Limacidae. The generic name ''Limax'' literally means "slug". Some species, such as the leopard slug (''L. maximus'') and the tawny garden slug (''Limacus flavus''), are considered garden pests.Ebeling. WChapter 12: Miscellaneous Pests. ''Urban Entomology''. Department of Entomology. UC Riverside. 2002. The genus ''Limax'' ''sensu stricto'' is probably monophyletic.Klee, B. 200Towards a phylogeny of ''Limax'' (Gastropoda: Stylommatophora)''. ''The Malacologist''. Molluscan Forum 2006. Distribution This genus is native to Europe, but at least one species (''L. maximus'') has been introduced into North America. Species The genus ''Limax'' includes at least 33 species: [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arion
Arion (; grc-gre, Ἀρίων; fl. c. 700 BC) was a kitharode in ancient Greece, a Dionysiac poet credited with inventing the dithyramb. The islanders of Lesbos claimed him as their native son, but Arion found a patron in Periander, tyrant of Corinth. Although notable for his musical inventions, Arion is chiefly remembered for the fantastic myth of his kidnapping by pirates and miraculous rescue by dolphins, a folktale motif. Origins Arion was a native of Methymna in Lesbos, and, according to some mythological accounts, a son of Cyclon or of Poseidon and the nymph Oncaea. All traditions about him agree in describing him as a contemporary and friend of Periander, tyrant of Corinth, so that he must have lived about BC 700. He appears to have spent a great part of his life at the court of Periander, but respecting his life and his poetical or musical productions, scarcely anything is known beyond the story of his escape from the sailors with whom he sailed from Sicily to Cori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epiphallus
The reproductive system of gastropods (slugs and snails) varies greatly from one group to another within this very large and diverse taxonomic class of animals. Their reproductive strategies also vary greatly, see Mating of gastropods. In many marine gastropods there are separate sexes (male and female); most terrestrial gastropods however are hermaphrodites. Courtship is a part of the behaviour of mating gastropods. In some families of pulmonate land snails, one unusual feature of the reproductive system and reproductive behavior is the creation and utilization of love darts, the throwing of which has been identified as a form of sexual selection. Gastropods are defined as snails and slugs, belonging to a larger group called Molluscs. Gastropods have unique reproductive systems, varying significantly from one taxonomic group to another. They can be separated into three categories: marine, freshwater, and land. Reproducing in marine or freshwater environments makes getting sperm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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