|
Nopsides
''Nopsides'' is a monotypic taxon, monotypic genus of North American Araneomorphae, araneomorph spiders in the family Caponiidae, containing the single species, ''Nopsides ceralbonus''. It is one of three nopine species, in addition to ''Tarsonops'' and ''Orthonops'', described by Ralph Vary Chamberlin from specimens collected from the Baja California region and nearby islands in 1924. They are active during the night, hiding under large stones of Mexico's deserts and xeric shrublands during the day. This species has only been found in north and central Mexico, and might also occur in Peru, though the single specimen found is a juvenile and difficult to identify with absolute certainty. Description These spiders have subsegmented tarsi similar to the other nopine genera, ''Nops (spider), Nops'', ''Tarsonops'', and ''Orthonops''. They can easily be distinguished from other nopines by their unique eye pattern: two distinctly separate rows of four eyes each. They can sometimes be fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caponiidae
Caponiidae is a family of ecribellate haplogyne spiders that are unusual in a number of ways. They differ from other spiders in lacking book lungs and having the posterior median spinnerets anteriorly displaced to form a transverse row with the anterior lateral spinnerets. Most species have only two eyes, which is also unusual among spiders. A few species of Caponiidae variously have four, six or eight eyes. In some species the number of eyes will increase when the spiderling changes its skin as it grows towards adulthood. Description These spiders of about are rarely noticed, but generally look like somewhat faded woodlouse hunter spiders in the genus '' Dysdera''. The carapace (cephalothorax or prosoma) is orange and the abdomen (opisthosoma) light gray. The two-eyed species have their two eyes in the anterior middle of the carapace. Eye numbers Caponiidae are unusual in the degree to which the eye number varies. In this they surpass even the family Cybaeidae in which so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nops (spider)
''Nops'' is a genus of medium-sized South American, Central American, and Caribbean spiders in the family Caponiidae, first described by Alexander Macleay in 1839. It has a great richness on the Caribbean islands, and most mainland species are located in high proportion toward the Caribbean coast. It likely has a neotropical distribution, though most species of South America are known only from the coast of Colombia and Venezuela, including the islands of Aruba, Curaçao, Bonaire and Trinidad. Monophyly ''Nops'' have subsegmeted tarsi, as well as two other leg characters often found in nopine genera: a ventral translucent keel on the anterior metatarsi and a translucent membrane between the anterior metatarsi and tarsi. These spiders can be distinguished from similar genera with these modifications by their elongated unpaired claw on the anterior legs, extending dorsally between the paired claws. Species it contains thirty-eight species plus one fossil in Dominican amber: * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ralph Vary Chamberlin
Ralph Vary Chamberlin (January 3, 1879October 31, 1967) was an American biologist, ethnographer, and historian from Salt Lake City, Utah. He was a faculty member of the University of Utah for over 25 years, where he helped establish the School of Medicine and served as its first dean, and later became head of the zoology department. He also taught at Brigham Young University and the University of Pennsylvania, and worked for over a decade at the Museum of Comparative Zoology at Harvard University, where he described species from around the world. Chamberlin was a prolific taxonomist who named over 4,000 new animal species in over 400 scientific publications. He specialized in arachnids (spiders, scorpions, and relatives) and myriapods (centipedes, millipedes, and relatives), ranking among the most prolific arachnologists and myriapodologists in history. He described over 1,400 species of spiders, 1,000 species of millipedes, and the majority of North American centipedes, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Taxon
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] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. Because it is on the North American Plate, North American Tectonic Plate, Greenland is included as a part of North America geographically. North America covers an area of about , about 16.5% of Earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa, and the list of continents and continental subregions by population, fourth by population after Asia, Africa, and Europe. In 2013, its population was estimated at nearly 579 million people in List of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's population. In Americas (terminology)#Human ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araneomorphae
The Araneomorphae (also called the Labidognatha) are an infraorder of spiders. They are distinguishable by chelicerae (fangs) that point diagonally forward and cross in a pinching action, in contrast to the Mygalomorphae (tarantulas and their close kin), where they point straight down. Araneomorphs comprise the vast majority of living spiders. Distinguishing characteristics Most spider species are Araneomorphae, which have fangs that face towards each other, increasing the orientations they can employ during prey capture. They have fewer book lungs (when present), and the females typically live one year. The Mygalomorphae have fangs that face towards the ground, and which are parallel to the long axis of the spider's body, thus they have only one orientation they can employ during prey capture. They have four pairs of book lungs, and the females often live many years. Image:Atrax robustus.jpg, This '' Atrax robustus'' shows the orientation of Myglamorphae fangs. Ima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarsonops
''Tarsonops'' is a genus of araneomorph spiders in the family Caponiidae Caponiidae is a family of ecribellate haplogyne spiders that are unusual in a number of ways. They differ from other spiders in lacking book lungs and having the posterior median spinnerets anteriorly displaced to form a transverse row with the a ..., first described by Ralph Vary Chamberlin in 1924. Species it contains seven species: *'' Tarsonops ariguanabo'' (Alayón, 1986) — Cuba, Panama *'' Tarsonops clavis'' Chamberlin, 1924 — Mexico *'' Tarsonops coronilla'' Sánchez-Ruiz & Brescovit, 2015 — Mexico *'' Tarsonops irataylori'' Bond & Taylor, 2013 — Belize *'' Tarsonops sectipes'' Chamberlin, 1924 — Mexico *'' Tarsonops sternalis'' (Banks, 1898) — Mexico *'' Tarsonops systematicus'' Chamberlin, 1924 — Mexico References Caponiidae Araneomorphae genera {{Caponiidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthonops
''Orthonops'' is a genus of North American araneomorph spiders in the family Caponiidae, first described by R. V. Chamberlin in 1924. Species it contains 10 species in the southwest United States and Mexico: *'' Orthonops confuso'' (Galán-Sánchez & Álvarez-Padilla, 2022) – Mexico *'' Orthonops gertschi'' Chamberlin, 1928 – USA *'' Orthonops giulianii'' Platnick, 1995 – USA *'' Orthonops icenoglei'' Platnick, 1995 – USA, Mexico *'' Orthonops iviei'' Platnick, 1995 – USA *'' Orthonops johnsoni'' Platnick, 1995 – USA *'' Orthonops lapanus'' Gertsch & Mulaik, 1940 – USA *'' Orthonops ovalis'' ( Banks, 1898) – Mexico *'' Orthonops overtus'' Chamberlin, 1924 (type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * Ty ...) – Mexico *'' Orthonops zebra'' Platnick, 1995 � ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baja California
Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of Baja California (). It has an area of (3.57% of the land mass of Mexico) and comprises the northern half of the Baja California Peninsula, north of the 28th parallel, plus oceanic Guadalupe Island. The mainland portion of the state is bordered on the west by the Pacific Ocean; on the east by Sonora, the U.S. state of Arizona, and the Gulf of California; on the north by the U.S. state of California; and on the south by Baja California Sur. The state has an estimated population of 3,769,020 as of 2020, significantly higher than the sparsely populated Baja California Sur to the south, and similar to San Diego County, California, to its north. Over 75% of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deserts And Xeric Shrublands
Deserts and xeric shrublands are a biome defined by the World Wide Fund for Nature. Deserts and xeric (ancient Greek xērós, “dry") shrublands form the largest terrestrial biome, covering 19% of Earth's land surface area. Ecoregions in this habitat type vary greatly in the amount of annual rainfall they receive, usually less than annually except in the margins. Generally evaporation exceeds rainfall in these ecoregions. Temperature variability is also diverse in these lands. Many deserts, such as the Sahara, are hot year-round, but others, such as East Asia's Gobi, become quite cold in winter. Temperature extremes are a characteristic of most deserts. High daytime temperatures give way to cold nights because there is no insulation provided by humidity and cloud cover. The diversity of climatic conditions, though quite harsh, supports a rich array of habitats. Many of these habitats are ephemeral in nature, reflecting the paucity and seasonality of available water. Woody ... [...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 '' The World Factbook''. . making it the world's 13th-largest country by area; with approximately 12 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> North America")
.svg "Click for more on -> Baja California"){kind=logo}
