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Cheiracanthium Punctorium
''Cheiracanthium punctorium'', one of several species commonly known as the yellow sac spider, is a spider found from central Europe to Central Asia. They reach a length of about 15 mm, and their bite can penetrate human skin; the bite has been compared to a wasp sting, perhaps a bit more severe, although susceptible persons can have stronger reactions, like nausea. Females build an egg sac of about 4 cm in high grass. It opens below and is aggressively defended. In Germany, where it is the only "seriously" venomous spider, it is a rare species, only known to occur in notable numbers in the Kaiserstuhl region, the hottest part of the country. Due to changing weather patterns, leading to increased aridity and less precipitation in some areas, this species spreads to more northern parts of Europe, e.g. Brandenburg, Germany, where the present trend is towards a climate more similar to the Central Asian steppes where ''C. punctorium'' is most numerous. The genus ''Chei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Joseph De Villers
Charles Joseph Devillers or de Villers (1724 in Rennes – 1810) was a French naturalist. Charles Devillers was a member of l’Académie des sciences belles-lettres et arts de Lyon from 1764 to 1810. He had a cabinet of curiosities and was interested in physics and mathematics. He published ''Caroli Linnaei entomologia'', in 1789, a collection of the insect descriptions of Carl von Linné. He was a friend of Philibert Commerson (1727–1773), Jean-Emmanuel Gilibert (1741–1814) and Marc Antoine Louis Claret de La Tourrette Marc Antoine Louis Claret de La Tourrette (11 August 1729, Lyon – 1 October 1793, Lyon) was a French botanist. He corresponded with Rousseau and his official botanical abbreviation is Latourr. Family His father, Jacques-Annibal Claret de La T ... (1729–1793). References *Pascal Duris (1993).'' Linné et la France (1780-1850)'', 318, Librairie Droz (Genève), collection Histoire des idées et critique littéraire : 281 p. French entomolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brandenburg
Brandenburg (; nds, Brannenborg; dsb, Bramborska ) is a state in the northeast of Germany bordering the states of Mecklenburg-Vorpommern, Lower Saxony, Saxony-Anhalt, and Saxony, as well as the country of Poland. With an area of 29,480 square kilometres (11,382 square miles) and a population of 2.5 million residents, it is the fifth-largest German state by area and the tenth-most populous. Potsdam is the state capital and largest city, and other major towns are Cottbus, Brandenburg an der Havel and Frankfurt (Oder). Brandenburg surrounds the national capital and city-state of Berlin, and together they form the Berlin/Brandenburg Metropolitan Region, the third-largest metropolitan area in Germany with a total population of about 6.2 million. There was an unsuccessful attempt to unify both states in 1996 and the states cooperate on many matters to this day. Brandenburg originated in the Northern March in the 900s AD, from areas conquered from the Wends. It later became the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiders Of Asia
Spiders (order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species diversity among all orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every land habitat. , 50,356 spider species in 132 families have been recorded by taxonomists. However, there has been debate among scientists about how families should be classified, with over 20 different classifications proposed since 1900. Anatomically, spiders (as with all arachnids) differ from other arthropods in that the usual body segments are fused into two tagmata, the cephalothorax or prosoma, and the opisthosoma, or abdomen, and joined by a small, cylindrical pedicel, however, as there is currently neither paleontological nor embryological evidence that spiders ever had a separat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheiracanthium
''Cheiracanthium'', commonly called ''yellow sac spiders'', is a genus of araneomorph spiders in the family Cheiracanthiidae, and was first described by Carl Ludwig Koch in 1839. They are usually pale in colour, and have an abdomen that can range from yellow to beige. Both sexes range in size from . They are unique among common house spiders because their tarsi do not point either outward, like members of ''Tegenaria'', or inward, like members of ''Araneus''), making them easier to identify. The name is a reference to the backwardly directed process on the cymbium of the male palp. The species epithet is derived from the Greek grc, χείρ, cheir, meaning "hand", and '' Acanthium'', a genus of thorny-stemmed plants. Venom Though they are beneficial predators in agricultural fields, they are also known to be mildly venomous to humans. Painful bites may be incurred from species such as '' C. punctorium'' in Europe, '' C. mildei'' in Europe and North America, '' C. inclusum'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC News
BBC News is an operational business division of the British Broadcasting Corporation (BBC) responsible for the gathering and broadcasting of news and current affairs in the UK and around the world. The department is the world's largest broadcast news organisation and generates about 120 hours of radio and television output each day, as well as online news coverage. The service maintains 50 foreign news bureaus with more than 250 correspondents around the world. Deborah Turness has been the CEO of news and current affairs since September 2022. In 2019, it was reported in an Ofcom report that the BBC spent £136m on news during the period April 2018 to March 2019. BBC News' domestic, global and online news divisions are housed within the largest live newsroom in Europe, in Broadcasting House in central London. Parliamentary coverage is produced and broadcast from studios in London. Through BBC English Regions, the BBC also has regional centres across England and national new ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheiracanthiidae
''Cheiracanthiidae'' is a family of araneomorph spiders first described by Vladimir Wagner in 1887. The synonym Eutichuridae was used for a long time, but Cheiracanthiidae has priority. The largest genus currently recognized as belonging to this family is ''Cheiracanthium'', which has previously been placed in both the Clubionidae and the Miturgidae. Taxonomy It was recognized as a synonym of "Eutichuridae" in 2009, but was in danger of becoming obsolete until it was resurrected in 2011. The group was originally described as the subfamily Eutichurinae of the family Miturgidae by Pekka T. Lehtinen in 1967. The monophyly of the group is described as "reasonably uncontroversial", but it has been placed in either the Miturgidae or the Clubionidae. An analysis by Martín J. Ramírez in 2014 suggested that it was better considered as a separate family. Genera , the World Spider Catalog accepts the following genera: *''Calamoneta'' Deeleman-Reinhold, 2001 — Indonesia *'' Cala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miturgidae
Miturgidae is a family of araneomorph spiders that includes nearly 170 species in 29 genera worldwide. First described by Eugène Simon in 1886, it has been substantially revised, and includes the previous family Zoridae as a synonym, and excludes the family Xenoctenidae. Several genera have also been removed, such as the large genus ''Cheiracanthium'', which was transferred to the Cheiracanthiidae. Genera , the World Spider Catalog accepts the following genera: *'' Argoctenus'' L. Koch, 1878 — New Zealand, Australia, Papua New Guinea *'' Diaprograpta'' Simon, 1909 — Australia *''Elassoctenus'' Simon, 1909 — Australia *''Eupograpta'' Raven, 2009 — Australia *''Hestimodema'' Simon, 1909 — Australia *''Israzorides'' Levy, 2003 — Israel *''Mituliodon'' Raven & Stumkat, 2003 — Timor-Leste, Australia *''Miturga'' Thorell, 1870 — Australia *''Mitzoruga'' Raven, 2009 — Australia *'' Nuliodon'' Raven, 2009 — Australia *'' Odomasta'' Simon, 1909 — Australia *''Paci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clubionidae
The sac spiders of the family Clubionidae have a very confusing taxonomic history. Once, this family was a large catch-all taxon for a disparate collection of spiders, similar only in that they had eight eyes arranged in two rows and conical anterior spinnerets that touched, and were wandering predators that built silken retreats, or sacs, usually on plant terminals, between leaves, under bark, or under rocks. These are now recognized to include several families, some of which are more closely related to the three-clawed spiders, like lynx and wolf spiders, than to Clubionidae and related families.Tree of Life Web Project. 2006. Clubionidae. Version 25 March 2006 (temporary). http://tolweb.org/Clubionidae/2675/2006.03.25 in The Tree of Life Web Project, http://tolweb.org/ General The remnant Clubionidae now consist of a few over 500 species in 15 genera worldwide. However, "sac spider" used on its own should imply a member of the family Clubionidae, but other common names may us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steppe
In physical geography, a steppe () is an ecoregion characterized by grassland plains without trees apart from those near rivers and lakes. Steppe biomes may include: * the montane grasslands and shrublands biome * the temperate grasslands, savannas and shrublands biome A steppe may be semi-arid or covered with grass or with shrubs or with both, depending on the season and latitude. The term "steppe climate" denotes the climate encountered in regions too dry to support a forest but not dry enough to be a desert. Steppe soils are typically of the chernozem type. Steppes are usually characterized by a semi-arid or continental climate. Extremes can be recorded in the summer of up to and in winter, . Besides this major seasonal difference, fluctuations between day and night are also very great. In both the highlands of Mongolia and northern Nevada, can be reached during the day with sub-freezing readings at night. Mid-latitude steppes feature hot summers and co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precipitation (meteorology)
In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravitational pull from clouds. The main forms of precipitation include drizzle, rain, Rain and snow mixed, sleet, snow, ice pellets, graupel and hail. Precipitation occurs when a portion of the atmosphere becomes saturated with water vapor (reaching 100% relative humidity), so that the water condenses and "precipitates" or falls. Thus, fog and mist are not precipitation but colloids, because the water vapor does not condense sufficiently to precipitate. Two processes, possibly acting together, can lead to air becoming saturated: cooling the air or adding water vapor to the air. Precipitation forms as smaller droplets coalesce via collision with other rain drops or ice crystals within a cloud. Short, intense periods of rain in scattered locations are called shower (precipitation), showers. Moisture that is lifted or otherwise forced to rise over a layer of sub-freezi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a subcontinent of Eurasia and it is located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. Comprising the westernmost peninsulas of Eurasia, it shares the continental landmass of Afro-Eurasia with both Africa and Asia. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south and Asia to the east. Europe is commonly considered to be separated from Asia by the watershed of the Ural Mountains, the Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea and the waterways of the Turkish Straits. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and Europe ... is formed by the Ural Mountains, Ural River, Caspian Sea, Caucasus Mountains, and the Blac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arid
A region is arid when it severely lacks available water, to the extent of hindering or preventing the growth and development of plant and animal life. Regions with arid climates tend to lack vegetation and are called xeric or desertic. Most arid climates straddle the Equator; these regions include parts of Africa, Asia, South America, North America, and Australia. Change over time The distribution of aridity at any time is largely the result of the general circulation of the atmosphere. The latter does change significantly over time through climate change. For example, temperature increase by 1.5–2.1 percent across the Nile Basin over the next 30–40 years could change the region from semi-arid to arid, significantly reducing the land usable for agriculture. In addition, changes in land use can increase demands on soil water and thereby increase aridity. See also * Arid Forest Research Institute * Aridity index * Desert climate * Desiccation tolerance Desiccat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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