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Califorctenus Cacachilensis
''Califorctenus'' is a genus of spiders in the family Ctenidae. It was first described in 2017 by Jiménez, Berrian, Polotow, and Palacios-Cardiel. , it contains only one species, ''Califorctenus cacachilensis'', also known as the Sierra Cacachilas wandering spider. ''Califorctenus cacachilensis'' ''Califorctenus cacachilensis'' is named for the Sierra de las Cacachilas mountain range in Baja California Sur, where it was first found in an abandoned mine by Michael Wall and Jim Berrian, researchers from the San Diego Natural History Museum, during an expedition on November 4, 2013. Subsequent collaboration with María Jimenez, an entomologist from Mexico who identified it as a member of the ''Ctenidae Wandering spiders (''Ctenidae'') are a family of spiders that includes the Brazilian wandering spiders. These spiders have a distinctive longitudinal groove on the top-rear of their oval carapace similar to those of the Amaurobiidae. They are hig ...'' or wandering spider family ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ctenidae
Wandering spiders (''Ctenidae'') are a family of spiders that includes the Brazilian wandering spiders. These spiders have a distinctive longitudinal groove on the top-rear of their oval carapace similar to those of the Amaurobiidae. They are highly defensive and venomous nocturnal hunters. Wandering spiders are known to hunt large prey, for example hylid species '' Dendropsophus branneri.'' Despite their notoriety for being dangerous, only a few members of ''Phoneutria'' have venom known to be hazardous to humans, but the venoms of this family are poorly known, so all larger ctenids should be treated with caution. Genera , the World Spider Catalog accepts the following genera: *'' Acantheis'' Thorell, 1891 — Asia *'' Acanthoctenus'' Keyserling, 1877 — South America, Central America, Jamaica, Mexico *'' Africactenus'' Hyatt, 1954 — Africa, India *'' Afroneutria'' Polotow & Jocqué, 2015 — Africa *'' Amauropelma'' Raven, Stumkat & Gray, 2001 — Asia, Australia *'' Amicac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra De Las Cacachilas
The Sierra de las Cacachilas is a mountain range of eastern Baja California Sur state, located on the southern Baja California Peninsula in northwestern Mexico. It is a mountain range of the Peninsular Ranges System, which extends from Southern California, through the Baja California Peninsula in Baja California and Baja California Sur states. Geography The Sierra de las Cacahilas lie just east of La Paz near the Pichilingue Peninsula on the Sea of Cortez side of the southeastern Baja California Peninsula. Prominent hills include Cerro del Puerto, in elevation, and Cerro de las Cienaga. Natural history Much of the flora and fauna found in the Sierra de las Cacahilas are considered endemic to the region, and a binational research team identified several species in 2013 that had only been found previously in the Sierra de la Laguna The Sierra de la Laguna is a mountain range at the southern end of the Baja California Peninsula in Mexico, and is the southernmost range of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baja California Sur
Baja California Sur (; 'South Lower California'), officially the Free and Sovereign State of Baja California Sur ( es, Estado Libre y Soberano de Baja California Sur), is the least populated state and the 31st admitted state of the 32 federal entities which comprise the 31 States of Mexico. It is also the ninth-largest Mexican state in terms of area. Before becoming a state on 8 October 1974, the area was known as the ''El Territorio Sur de Baja California'' ("South Territory of Lower California"). It has an area of , or 3.57% of the land mass of Mexico, and occupies the southern half of the Baja California Peninsula, south of the 28th parallel, plus the uninhabited Rocas Alijos in the Pacific Ocean. It is bordered to the north by the state of Baja California, to the west by the Pacific Ocean, and to the east by the Gulf of California. The state has maritime borders with Sonora and Sinaloa to the east, across the Gulf of California. The state is home to the tourist resorts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abandoned Mine
An abandoned mine is a mine or quarry which is no longer producing or operational and, there is no responsible party to finance the cost to address the remediation and/or restoration of the mine feature/site. Terms and definitions vary though the common theme is that the cost to address the hazards is typically borne by the public/taxpayer/government. An abandoned mine may be a hazard to health, safety or, environment. Hazards The term incorporates all types of old mines, including underground shaft mines and drift mines, and surface mines, including quarries and placer mining. Abandoned mines are found throughout the world. They contain many hazards to the unwary who venture around them, including: * Subsidence (collapsing ground) * Blasting caps and other undetonated explosives * Blackdamp accumulating in old mines, which can cause suffocation * Hidden mine shafts, often hidden beneath bushes and grasses and other vegetation that has grown up around the mine entrance * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Diego Natural History Museum
The San Diego Natural History Museum is a museum located in Balboa Park in San Diego, California. It was founded in 1874 as the San Diego Society of Natural History. It is the second oldest scientific institution west of the Mississippi and the oldest in Southern California. The present location of the museum was dedicated on January 14, 1933. A major addition to the museum was dedicated in April 2001, doubling exhibit space. History The San Diego Natural History Museum grew out of the San Diego Society of Natural History, which was founded on October 9, 1874. The Natural History Society was founded by George W. Barnes, Daniel Cleveland, Charles Coleman, E. W. Hendrick and O. N. Sanford. It is the oldest scientific institution in southern California, and the second oldest west of the Mississippi. In its initial years, the San Diego Society of Natural History was the region's primary source of scientific culture, serving a small but growing community eager for information a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Softball
Softball is a game similar to baseball played with a larger ball on a smaller field. Softball is played competitively at club levels, the college level, and the professional level. The game was first created in 1887 in Chicago by George Hancock. There are two rule sets for softball generally: ''slow pitch softball'' and ''fastpitch''. Slow pitch softball is commonly played recreationally, while women's fastpitch softball is a Summer Olympic sport and is played professionally. Depending on the variety being played and the age and gender of the players, the particulars of field and equipment vary. While distances between bases of 60 feet are standard across varieties, the pitcher's plate ranges from 35 to 43 feet away from home plate, and the home run fence can be 220 to 300 feet away from home plate. The ball itself is typically 11 or 12 inches (28 or 30 cm) in circumference, also depending on specifics of the competition. Softball rules vary somewhat from those of baseba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarter (United States Coin)
The quarter, short for quarter dollar, is a Coins of the United States dollar, United States coin worth 25 cent (U.S. coin), cents, one-quarter of a United States dollar, dollar. The coin sports the profile of George Washington on its obverse, and after 1998 its reverse design has changed frequently. It has been produced on and off since 1796 and consistently since 1831. It has a diameter of 0.955 inch (24.26 mm) and a thickness of 0.069 inch (1.75 mm). Its current version is composed of two layers of cupronickel (75% copper, 25% nickel) clad on a core of pure copper. With the cupronickel layers comprising 1/3 of total weight, the coin's overall composition is therefore 8.33% nickel, 91.67% copper. Its weight is 5.670 grams (0.1823 troy oz, or 0.2000 Avoirdupois system, avoirdupois oz). Designs before 1932 The choice of a quarter-dollar as a denomination, as opposed to the or the 20-cent piece that is more common elsewhere; it originated with the practice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarantula
Tarantulas comprise a group of large and often hairy spiders of the family Theraphosidae. , 1,040 species have been identified, with 156 genera. The term "tarantula" is usually used to describe members of the family Theraphosidae, although many other members of the same infraorder (Mygalomorphae) are commonly referred to as "tarantulas" or "false tarantulas". Some of the more common species have become popular in the exotic pet trade. Many New World species kept as pets have setae known as urticating hairs that can cause irritation to the skin, and in extreme cases, cause damage to the eyes. Overview Like all arthropods, the tarantula is an invertebrate that relies on an exoskeleton for muscular support.Pomeroy, R. (2014, February 4). Pub. Real Clear Science, "Spiders, and Their Amazing Hydraulic Legs and Genitalia". Retrieved October 13, 2019, from https://www.realclearscience.com/blog/2013/02/spiders-their-amazing-hydraulic-legs-and-genitals.html. Like other Arachnida, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iridescence
Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear to gradually change color as the angle of view or the angle of illumination changes. Examples of iridescence include soap bubbles, feathers, butterfly wings and seashell nacre, and minerals such as opal. It is a kind of structural coloration that is due to wave interference of light in microstructures or thin films. Pearlescence is a related effect where some or most of the reflected light is white. The term pearlescent is used to describe certain paint finishes, usually in the automotive industry, which actually produce iridescent effects. Etymology The word ''iridescence'' is derived in part from the Greek word ἶρις ''îris'' ( gen. ἴριδος ''íridos''), meaning ''rainbow'', and is combined with the Latin suffix ''-escent'', meaning "having a tendency toward". Iris in turn derives from the goddess Iris of Greek mythology, who is the personification of the rainbow and ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entomologist
Entomology () is the scientific study of insects, a branch of zoology. In the past the term "insect" was less specific, and historically the definition of entomology would also include the study of animals in other arthropod groups, such as arachnids, myriapods, and crustaceans. This wider meaning may still be encountered in informal use. Like several of the other fields that are categorized within zoology, entomology is a taxon-based category; any form of scientific study in which there is a focus on insect-related inquiries is, by definition, entomology. Entomology therefore overlaps with a cross-section of topics as diverse as molecular genetics, behavior, neuroscience, biomechanics, biochemistry, systematics, physiology, developmental biology, ecology, morphology, and paleontology. Over 1.3 million insect species have been described, more than two-thirds of all known species. Some insect species date back to around 400 million years ago. They have many kinds of intera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Mexico covers ,Mexico ''''. . making it the world's 13th-largest country by are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Araneomorphae Genera
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda.' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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