|
Aelurillus Subaffinis
''Aelurillus subaffinis'' is a species of jumping spider in the genus ''Aelurillus'' that lives in East Africa. It was first described in 1947 by Ludovico di Caporiacco based on a specimen that may have come from Tanzania. Only the female has been described. The spider is small. It has a dark brown carapace that is between long and a yellow abdomen that has a length between . It has brown chelicerae, a brown-yellow clypeus and yellow legs. The epigyne has a low pocket, distinctive shape and sclerotized flaps. It is similar to the related '' Aelurillus aeruginosus'' apart from the copulatory organs. Taxonomy ''Aelurillus subaffinis'' was first described by Ludovico di Caporiacco in 1947. It was placed in the genus ''Aelurillus'', first described by Eugène Simon in 1885. Despite being the second of the genus to be described, 45 years had passed since the naming of '' Aelurillus cristatopalpus'' and another 45 passed before the next, ''Aelurillus minutus''. The genus na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aelurillus V-insignitus
''Aelurillus v-insignitus'' is a species of jumping spiders. Appearance The male has v-shaped rows of hairs on its head and a pronounced white median stripe on its abdomen. The female is mottled brown. The spider can reach a length of . Name ''Insignitus'' is Latin for "signed", because of the white chevron on the back of the male spider, which is in the form of the letter "V". This letter was originally spelled one v above another V, which could also be interpreted as a double V or W, but usually is interpreted as "V". Distribution ''A. v-insignitus'' occurs in the Palaearctic. It is the only ''Aelurillus'' species that occurs in northwestern Europe. References External links *Photography of male and female Salticidae Spiders of Europe Spiders described in 1757 Palearctic spiders Taxa named by Carl Alexander Clerck {{Salticidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aelurillus Concolor
''Aelurillus'' is a genus of spiders in the family Salticidae (jumping spiders). Description Species of the genus ''Aelurillus'' are typically about 7 mm long in females, and up to five mm in males. They are stout, squat-shaped and rather furry, with females often uniformly mottled sandy brown, while males are often black, sometimes with a pattern and with light, annulated legs.Murphy & Murphy 2000: 273 Habits Spiders in this genus mainly catch and feed on ants ( myrmecophagy). A Southeast Asian species of the genus ''Aelurillus'' has been observed to jump around 30-40 times its body length straight onto the back of a large gnaphosid spider and kill it. They like hot, dry, stony places or small bare open areas with dead twigs or similar amongst low vegetation. Distribution Species of the genus ''Aelurillus'' occur in the Palaearctic and Africa, with a few species known from India (''A. improvisus'', ''A. minimontanus'') and Sri Lanka (''A. kronestedti'', ''A. quadri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Spider Catalog
The World Spider Catalog (WSC) is an online searchable database concerned with spider taxonomy. It aims to list all accepted families, genera and species, as well as provide access to the related taxonomic literature. The WSC began as a series of individual web pages in 2000, created by Norman I. Platnick of the American Museum of Natural History. After Platnick's retirement in 2014, the Natural History Museum of Bern (Switzerland) took over the catalog, converting it to a relational database. , 50,151 accepted species were listed. The order Araneae 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 dive ... (spiders) has the seventh-most species of all orders. The existence of the World Spider Catalog makes spiders the largest taxon with an online listing that is updated regularly. It ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Assab
Assab or Aseb (, ) is a port city in the Southern Red Sea Region of Eritrea. It is situated on the west coast of the Red Sea. Languages spoken in Assab are predominantly Afar, Tigrinya, and Arabic. Assab is known for its large market, beaches and nightlife. History Assab is about 50 km NW of the ancient city of Arsinoe Epidires. On 15 November 1869 the port of Assab was bought by the Rubattino Shipping Company of Italy from the local Sultan. After the Italian government took over control of the port on 5 July 1882 it laid the foundations for the formation of the colony of Italian Eritrea, which became the independent country of Eritrea following its independence from the Transitional Government of Ethiopia in the 1990s. Construction of an oil refinery began in 1964 and it opened in 1967. By 1989, Assab had a population of 39,600 inhabitants. The port facilities were greatly expanded in the early 1990s, with the construction of a new terminal. The oil refinery was shut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kálmán Kittenberger
Kálmán Kittenberger (Léva, 10 October 1881 - Nagymaros, 4 January 1958) was a Hungarian traveller, natural historian, biologist and collector. He was born in Léva, now in Slovakia (''Levice''). He made six travels to Africa, the first time in 1902, where he was accompanying a wealthy nobleman on a hunting trip and supported by the Hungarian National Museum in Budapest. He spent altogether ten and a half years in Africa. During his journeys he faced financial difficulties as he received no sponsorship, but he was still able to grant 60,000 items to the biological collections of the Hungarian National Museum, including 300 new animal species. (Almost 40 of them were named after Kittenberger, including '' Pachyonomastus kittenbergeri'') Part of that collection was annihilated by a fire in 1956. On museum specimen labels his name has been altered by a department head against his will to Katona. Many of the taxonomic names dedicated to him are using this pseudonym e.g. Brachiopt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype
A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany, an isotype is a duplicate of the holotype, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering. A holotype is not necessarily "typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Distribution
Species distribution —or species dispersion — is the manner in which a biological taxon is spatially arranged. The geographic limits of a particular taxon's distribution is its range, often represented as shaded areas on a map. Patterns of distribution change depending on the scale at which they are viewed, from the arrangement of individuals within a small family unit, to patterns within a population, or the distribution of the entire species as a whole (range). Species distribution is not to be confused with dispersal, which is the movement of individuals away from their region of origin or from a population center of high density. Range In biology, the range of a species is the geographical area within which that species can be found. Within that range, distribution is the general structure of the species population, while dispersion is the variation in its population density. Range is often described with the following qualities: * Sometimes a distinction is made betw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spermatheca
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 reproduct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aelurillus Faragallai
''Aelurillus'' is a genus of spiders in the family Salticidae (jumping spiders). Description Species of the genus ''Aelurillus'' are typically about 7 mm long in females, and up to five mm in males. They are stout, squat-shaped and rather furry, with females often uniformly mottled sandy brown, while males are often black, sometimes with a pattern and with light, annulated legs.Murphy & Murphy 2000: 273 Habits Spiders in this genus mainly catch and feed on ants ( myrmecophagy). A Southeast Asian species of the genus ''Aelurillus'' has been observed to jump around 30-40 times its body length straight onto the back of a large gnaphosid spider and kill it. They like hot, dry, stony places or small bare open areas with dead twigs or similar amongst low vegetation. Distribution Species of the genus ''Aelurillus'' occur in the Palaearctic and Africa, with a few species known from India (''A. improvisus'', ''A. minimontanus'') and Sri Lanka (''A. kronestedti'', ''A. quadri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropod Leg
The arthropod leg is a form of jointed appendage of arthropods, usually used for walking. Many of the terms used for arthropod leg segments (called podomeres) are of Latin origin, and may be confused with terms for bones: ''coxa'' (meaning hip, plural ''coxae''), ''trochanter'', ''femur'' (plural ''femora''), ''tibia'' (plural ''tibiae''), ''tarsus'' (plural ''tarsi''), ''ischium'' (plural ''ischia''), ''metatarsus'', ''carpus'', ''dactylus'' (meaning finger), ''patella'' (plural ''patellae''). Homologies of leg segments between groups are difficult to prove and are the source of much argument. Some authors posit up to eleven segments per leg for the most recent common ancestor of extant arthropods but modern arthropods have eight or fewer. It has been argued that the ancestral leg need not have been so complex, and that other events, such as successive loss of function of a ''Hox''-gene, could result in parallel gains of leg segments. In arthropods, each of the leg segments ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider Vision
The eyes of spiders vary significantly in their structure, arrangement, and function. They usually have eight, each being a simple eye with a single lens (optics), lens rather than multiple units as in the compound eyes of insects. The specific arrangement and structure of the eyes is one of the features used in the identification and classification of different species, genera, and families. Most Haplogynae, haplogynes have six eyes, although some have eight (Plectreuridae), four (e.g., ''Tetrablemma'') or even two (most Caponiidae). In some cave species, there are no eyes at all (e.g. Stalita taenaria). Sometimes one pair of eyes is better developed than the rest. Several families of hunting spiders, such as jumping spiders and wolf spiders, have fair to excellent vision. The main pair of eyes in jumping spiders even sees in colour. Structure and anatomy Spiders' eyes are Simple eye in invertebrates, simple eyes, or ''ocelli'' (singular ''ocellus''), meaning their eyes have a si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade (biology)
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, the equivalent Latin term ''cladus'' (plural ''cladi'') is often used in taxonomical literature. The common ancestor may be an individual, a population, or a species (extinct or extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed monophyletic (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic. Some of the relationships between organis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
