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Chaco Socos
''Chaco socos'' is a species of mygalomorph spiders of Chile, named after its type locality: Socos, Limarí, Region IV (Coquimbo region).Goloboff, Pablo A. "A revision of the South American spiders of the family Nemesiidae (Araneae, Mygalomorphae). Part 1, Species from Peru, Chile, Argentina, and Uruguay. Bulletin of the AMNH; no. 224." (1995). This species differs from '' C. tigre'' by its spermathecae having a longer duct and a less globose fundus, and by constructing a beveled door for its burrow; the general colouration is grayish, while ''C. tigre'' is more brownish coloured. Description The male has a total length of ; a cephalothorax length of and width of ; a cephalic region length of and width of ; an ocular quadrangle (OQ) length of and width of ; a labium length of and width of ; and a sternum length of and width of . The labium possesses five cuspules. Its posterior sternal sigilla is small and shallow. Its cephalothorax is ashgray, with a lycosid-like pattern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mygalomorphae
The Mygalomorphae, or mygalomorphs, are an infraorder of spiders, and comprise one of three major groups of living spiders with over 3000 species, found on all continents except Antarctica. Many members are known as trapdoor spiders due to them forming trapdoors over their burrows. Other prominent groups include Australian funnel web spiders and tarantulas, with the latter accounting for around one third of all mygalomorphs. Description This group of spiders comprises mostly heavy-bodied, stout-legged spiders including tarantulas, Australian funnel-web spiders, mouse spiders, and various families of spiders commonly called trapdoor spiders. Like the " primitive" suborder of spiders Mesothelae, they have two pairs of book lungs, and downward-pointing chelicerae. Because of this, the two groups were once believed to be closely related. Later it was realized that the common ancestors of all spiders had these features (a state known as symplesiomorphy). Following the branching ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chile
Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east and the Pacific Ocean to the west. Chile covers an area of , with a population of 17.5 million as of 2017. It shares land borders with Peru to the north, Bolivia to the north-east, Argentina to the east, and the Drake Passage in the far south. Chile also controls the Pacific islands of Juan Fernández, Isla Salas y Gómez, Desventuradas, and Easter Island in Oceania. It also claims about of Antarctica under the Chilean Antarctic Territory. The country's capital and largest city is Santiago, and its national language is Spanish. Spain conquered and colonized the region in the mid-16th century, replacing Inca rule, but failing to conquer the independent Mapuche who inhabited what is now south-central Chile. In 1818, after declaring in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coquimbo Region
The Coquimbo Region ( es, Región de Coquimbo, ) is one of Chile's 16 regions (first order administrative divisions). It is bordered by Atacama to the north, Valparaíso to the south, Argentina to the east, and the Pacific Ocean to the west. It is approximately north of the national capital, Santiago. The capital and largest city is La Serena. Other important cities include the seaport Coquimbo and the agricultural centre Ovalle. Geography and ecology The Coquimbo Region forms the narrowest part, or 'waist' of Chile, and is hence one of the country's more mountainous regions, as the Andes range runs closer to the sea than elsewhere. The region has notable marine species as well as taxa that are associated with the mountainous regions. With respect to marine organisms, the upwelling areas encourage bioproductivity off of this Pacific Coast area of Chile. In the southern mountainous areas of the Coquimbo Region, the rare and endangered Chilean Wine Palm is found, whose ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaco Tigre
''Chaco tigre'' is a species of mygalomorph spiders of Chile, named after its type locality: Quebrada El Tigre, Petorca, Region V (Valparaíso Region).Goloboff, Pablo A. "A revision of the South American spiders of the family Nemesiidae (Araneae, Mygalomorphae). Part 1, Species from Peru, Chile, Argentina, and Uruguay. Bulletin of the AMNH; no. 224." (1995). This species differs from '' C. socos'' by its spermathecae having a shorter duct and a more globose fundus, and by constructing a thin door for its burrow; the general colouration is brownish, while ''C. socos'' is more grayish coloured. Description The male has a total length of ; and a cephalothorax length of and width of . The labium length is 82% of its width. The sternum width is 82% of its length. The labium possesses six small cuspules. Its posterior sternal sigilla is well marked. Its cephalothorax and legs are yellowish brown, while the legs carry darker spots; the abdomen is lighter, with some brown coloring. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spermathecae
The spermatheca (pronounced plural: spermathecae ), also called receptaculum seminis (plural: receptacula seminis), is an organ of the female reproductive tract in insects, e.g. ants, bees, some molluscs, oligochaeta worms and certain other invertebrates and vertebrates. Its purpose is to receive and store sperm from the male or, in the case of hermaphrodites, the male component of the body. Spermathecae can sometimes be the site of fertilization when the oocytes are sufficiently developed. Some species of animal have multiple spermathecae. For example, certain species of earthworms have four pairs of spermathecae—one pair each in the 6th, 7th, 8th, and 9th segments. The spermathecae receive and store the spermatozoa of another earthworm during copulation. They are lined with epithelium and are variable in shape: some are thin, heavily coiled tubes, while others are vague outpocketings from the main reproductive tract. It is one of the many variations in sexual reproduction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalothorax
The cephalothorax, also called prosoma in some groups, is a tagma of various arthropods, comprising the head and the thorax fused together, as distinct from the abdomen behind. (The terms ''prosoma'' and ''opisthosoma'' are equivalent to ''cephalothorax'' and ''abdomen'' in some groups.) The word ''cephalothorax'' is derived from the Greek words for head (, ') and thorax (, '). This fusion of the head and thorax is seen in chelicerates and crustaceans; in other groups, such as the Hexapoda (including insects), the head remains free of the thorax. In horseshoe crabs and many crustaceans, a hard shell called the carapace covers the cephalothorax. Arachnid anatomy Fovea The fovea is the centre of the cephalothorax and is located behind the head (only in spiders).Dalton, Steve (2008). ''Spiders; The Ultimate Predators''. A & C Black, London. P.p. 19. . It is often important in identification. It can be transverse or procurved Smith, A. M. (1990c). Baboon spiders: Tarantulas of Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sternum
The sternum or breastbone is a long flat bone located in the central part of the chest. It connects to the ribs via cartilage and forms the front of the rib cage, thus helping to protect the heart, lungs, and major blood vessels from injury. Shaped roughly like a necktie, it is one of the largest and longest flat bones of the body. Its three regions are the manubrium, the body, and the xiphoid process. The word "sternum" originates from the Ancient Greek στέρνον (stérnon), meaning "chest". Structure The sternum is a narrow, flat bone, forming the middle portion of the front of the chest. The top of the sternum supports the clavicles (collarbones) and its edges join with the costal cartilages of the first two pairs of ribs. The inner surface of the sternum is also the attachment of the sternopericardial ligaments. Its top is also connected to the sternocleidomastoid muscle. The sternum consists of three main parts, listed from the top: * Manubrium * Body (gladiolus) * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycosid
Wolf spiders are members of the family Lycosidae (). They are robust and agile hunters with excellent eyesight. They live mostly in solitude, hunt alone, and do not spin webs. Some are opportunistic hunters, pouncing upon prey as they find it or chasing it over short distances; others wait for passing prey in or near the mouth of a burrow. Wolf spiders resemble nursery web spiders (family Pisauridae), but wolf spiders carry their egg sacs by attaching them to their spinnerets, while the Pisauridae carry their egg sacs with their chelicerae and pedipalps. Two of the wolf spider's eight eyes are large and prominent; this distinguishes them from nursery web spiders, whose eyes are all of roughly equal size. This can also help distinguish them from the similar-looking grass spiders. Description The many genera of wolf spiders range in body size (legs not included) from less than . They have eight eyes arranged in three rows. The bottom row consists of four small eyes, the middle ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider Anatomy
The anatomy of spiders includes many characteristics shared with other arachnids. These characteristics include bodies divided into two tagmata (sections or segments), eight jointed legs, no wings or antennae, the presence of chelicerae and pedipalps, simple eyes, and an exoskeleton, which is periodically shed. Spiders also have several adaptations that distinguish them from other arachnids. All spiders are capable of producing silk of various types, which many species use to build webs to ensnare prey. Most spiders possess venom, which is injected into prey (or defensively, when the spider feels threatened) through the fangs of the chelicerae. Male spiders have specialized pedipalps that are used to transfer sperm to the female during mating. Many species of spiders exhibit a great deal of sexual dimorphism. External anatomy Spiders, unlike insects, have only two main body parts ( tagmata) instead of three: a fused head and thorax (called a cephalothorax or prosoma) and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Nemesiidae Species
This page lists all described species of the spider family Nemesiidae accepted by the World Spider Catalog : A ''Amblyocarenum'' '' Amblyocarenum'' Simon, 1892 * '' A. doleschalli'' (Ausserer, 1871) — Italy (mainland, Sicily) * '' A. nuragicum'' Decae, Colombo & Manunza, 2014 — Italy (Sardinia) * '' A. obscurum'' (Ausserer, 1871) — Italy (Sicily) * '' A. walckenaeri'' (Lucas, 1846) ( type) — Mediterranean B ''Brachythele'' '' Brachythele'' Ausserer, 1871 * '' B. bentzieni'' Zonstein, 2007 — Greece * '' B. denieri'' (Simon, 1916) — Greece, Bulgaria * '' B. icterica'' (C. L. Koch, 1838) ( type) — Italy, Croatia, North Macedonia * '' B. incerta'' Ausserer, 1871 — Cyprus * '' B. langourovi'' Lazarov, 2005 — Bulgaria * '' B. media'' Kulczyński, 1897 — Slovenia, Croatia, Albania * '' B. speculatrix'' Kulczyński, 1897 — SE Europe (Balkans) * '' B. varrialei'' (Dalmas, 1920) — Eastern Europe C ''Calisoga'' '' Calisoga'' Chamberlin, 1937 * '' C. anomala'' (Sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nemesiidae
Nemesiidae, also known as funnel-web trapdoor spiders, is a family of mygalomorph spiders first described by Eugène Simon in 1889, and raised to family status in 1985. Before becoming its own family, it was considered part of "Dipluridae". Description Nemesiidae are relatively large spiders with robust legs and a body that is nearly three times as long as it is wide. They are darkly colored, brown to black, though some have silvery hairs on their carapace. '' Atmetochilus'' females can grow over long. They live in burrows, often with a hinged trapdoor. This door is pushed up while the spider waits for passing prey. They rarely leave their burrows, catching prey and withdrawing as quickly as possible. Some of these burrows have a side tubes, but it is not certain whether ''Sinopesa'' builds burrows at all. Genera , the World Spider Catalog accepts the following genera: *'' Amblyocarenum'' Simon, 1892 *''Brachythele'' Ausserer, 1871 — Europe, Cyprus *''Calisoga'' Chamberli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiders Of South America
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 separate t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
