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Aelurillus Basseleti
''Aelurillus basseleti'' is a species of jumping spider in the genus ''Aelurillus'' that has been found in Algeria, Morocco and Tunisia. Originally named ''Salticus basseleti'', the spider was first identified in 1846 by Hippolyte Lucas, but the original male holotype has been lost. The female was first described in 2006. The spider is small and hard to distinguish from the related species '' Aelurillus luctuosus'' and '' Aelurillus monardi''. The dark brown carapace is typically between long and the grey-yellow abdomen is between long, the female being larger than the male. The carapace has a single stripe down the middle. While the female is hard to distinguish compared to others in the genus, the male spider has distinctive white or tawny bands on the clypeus. The male has a curved embolus that is sufficiently varied between individual spiders that it is not sufficiently specific to identify the species. Taxonomy ''Aelurillus basseleti'' was first described by the Fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), 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 taxonomy (biology), 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wayne Maddison
Wayne Paul Maddison , is a professor and Canada Research Chair at the departments of zoology and botany at the University of British Columbia, and the Director of the Spencer Entomological Collection at the Beaty Biodiversity Museum. His research concerns the phylogeny, biodiversity, and evolution of jumping spiders (Salticidae), of which he has discovered new species and genera. He has also done research in phylogenetic theory, developing and perfecting various methods used in comparative biology, such as character state inference in internal nodes through Maximum parsimony (phylogenetics), maximum parsimony, squared-change parsimony, or character correlation through the concentrated changes test or pairwise comparisons. In collaboration with David R. Maddison, he worked on thMesquiteopen-source phylogeny software, thMacCladeprogram, and the Tree of Life Web Project. His research has led him to discover new species of jumping spiders in Sarawak and Papua New Guinea. Selected pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reghaïa
Reghaïa is a municipality in Algiers Province, Algeria. It is located in Rouïba district and is the most populated municipality of the district. Geography It is located in the northern part of the plain of Mitidja, with sandy beaches along the coast. It is home to a Ramsar-recognized humid marsh and a lake having an area of and a length of . A natural reserve is being built there. There is also a island there: ''Hadjrat Bounattah/Ile Agueli'', one kilometer (0.6 miles) from the beach of Reghaïa. History Reghaïa original name are " re agha " , "region agha ", the urbanization of the area started with the arriving of the ''Ouled Hadjadj'' tribe, with origins from today's Morocco. During the start of the French rule in Algeria, Reghaïa came into existence as a district by an act signed by Napoleon III in 1858, and it became a purely agricultural colony of 3000 hectares (7413 acres) which were given to two French settler families ''Mercier'' and ''Saussine'' (the latter was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Harrach
El Harrach ( Berber: ⵍⵃⴻⵔⵔⴰⵛ , formerly ''Maison-Carrée'') is a suburb of the Algerian capital Algiers. The town is home to USM El Harrach football club and the Higher National Veterinary School is located in the area. Notable people See also * Massacre of El Ouffia The Massacre of El Ouffia took place on 6 April 1832 during the French conquest of Algeria. It was a war crime committed against the tribe of El Ouffia near El Harrach by the Troupes Coloniales under Colonel Maximilien Joseph Schauenburg. Hist ... (6 April 1832) References External links The official website of the town of El-Harrach Suburbs of Algiers Communes of Algiers Province Algiers Province {{Algiers-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zemmouri
Zemmouri is a town and commune in the Bordj Menaïel District of Boumerdès Province, Algeria. As of 2008, the population of the municipality is 26,408. Villages The villages of the commune of ''Zemmouri'' are: History The coastal site of Zemmouri El-Bahri was a Phoenician and later Roman settlement named Rusubbicari. In the medieval period, it became a small port named Marsā al-Dajāj (literally "chicken port"). Archeological research there has uncovered medieval structures and pottery, as well as Roman coins. By the 19th century the main village, slightly further inland, was known as Zemmouri (usually spelled Zamouri or Zemouri at the time). In 1872 the French government established a colonial settlement there using land confiscated from the Isser el-Ouidan tribe and from private individuals in the wake of the Mokrani Revolt; in 1886 it was renamed Courbet, after Admiral Amédée Courbet. Following Algeria's independence in 1962, the name Zemmouri was restored. French ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constantine, Algeria
Constantine ( ar, قسنطينة '), also spelled Qacentina or Kasantina, is the capital of Constantine Province in northeastern Algeria. During Roman Empire, Roman times it was called Cirta and was renamed "Constantina" in honor of emperor Constantine the Great. It was the capital of the French department of Constantine (département), Constantine until 1962. Located somewhat inland, Constantine is about from the Mediterranean Sea, Mediterranean coast, on the banks of the Rhumel River. Constantine is regarded as the capital of eastern Algeria and the commercial center of its region, and it has a population of about 450,000 (938,475Office National des Statistiques, Recensement General de la Population et de l’Habitat 2008 2008 population census. Accessed on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epigyne
The epigyne or epigynum is the external genital structure of female spiders. As the epigyne varies greatly in form in different species, even in closely related ones, it often provides the most distinctive characteristic for recognizing species. It consists of a small, hardened portion of the exoskeleton located on the underside of the abdomen, in front of the epigastric furrow and between the epigastric plates. Functions The primary function of the epigyne is to receive and direct the palpal organ of the male during copulation. The various specific forms of epigynes are correlated, in each case, with corresponding specific differences in the palpus of the male. This specialization prevents individuals of different species from mating. The epigyne covers or accompanies the openings of the spermathecae, which are pouches for receiving and retaining sperm. Frequently, the openings of the spermathecae are on the outer face of the epigyne and can be easily seen. A secondary functi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palpal Bulb
The two palpal bulbs – also known as palpal organs and genital bulbs – are the copulatory organs of a male spider. They are borne on the last segment of the pedipalps (the front "limbs" of a spider), giving the spider an appearance often described as like wearing boxing gloves. The palpal bulb does not actually produce sperm, being used only to transfer it to the female. Palpal bulbs are only fully developed in adult male spiders and are not completely visible until after the final moult. In the majority of species of spider, the bulbs have complex shapes and are important in identification. Structure The palpal bulb of a mature male spider is borne on the last segment of the pedipalp. This segment usually has touch-sensitive hairs (setae) with nerves leading to them. The bulb itself is entirely without nerves, and hence without sensory organs and muscles, since these depend on nerves for their functioning, although some spiders have one or two muscles external to the bulb and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pedipalp
Pedipalps (commonly shortened to palps or palpi) are the second pair of appendages of chelicerates – a group of arthropods including spiders, scorpions, horseshoe crabs, and sea spiders. The pedipalps are lateral to the chelicerae ("jaws") and anterior to the first pair of walking legs. Overview Pedipalps are composed of six segments or articles: the coxa, the trochanter, the femur, the short patella, the tibia, and the tarsus. In spiders, the coxae frequently have extensions called maxillae or gnathobases, which function as mouth parts with or without some contribution from the coxae of the anterior legs. The limbs themselves may be simple tactile organs outwardly resembling the legs, as in spiders, or chelate weapons ( pincers) of great size, as in scorpions. The pedipalps of Solifugae are covered in setae, but have not been studied in detail. Comparative studies of pedipalpal morphology may suggest that leg-like pedipalps are primitive in arachnids. At present, the only ... [...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] |
Spinneret
A spinneret is a silk-spinning organ of a spider or the larva of an insect. Some adult insects also have spinnerets, such as those borne on the forelegs of Embioptera. Spinnerets are usually on the underside of a spider's opisthosoma, and are typically segmented. While most spiders have six spinnerets, some have two, four, or eight. They can move both independently and in concert. Most spinnerets are not simple structures with a single orifice producing a single thread, but complex structures of many microscopic spigots, each producing one filament. This produces the necessary orientation of the protein molecules, without which the silk would be weak and useless. Spigots can be singular or found in groups, which also permits spiders to combine multiple filaments in different ways to produce many kinds of silk for various purposes. Spinneret morphology can help arachnologists identify the taxon of a specimen and the specific morphology of a spigot can determine its use as well ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chelicerae
The chelicerae () are the mouthparts of the subphylum Chelicerata, an arthropod group that includes arachnids, horseshoe crabs, and sea spiders. Commonly referred to as "jaws", chelicerae may be shaped as either articulated fangs, or similarly to pincers. Some chelicerae, such as those found on nearly all spiders, are hollow and contain (or are connected to) venom glands, and are used to inject venom into prey or a perceived threat. In ''Pisaurina mira'', also known as the nursery web spider, the chelicerae are utilized to snatch the prey once it becomes within reach, facilitating the "sit-and-wait ambush predator" behavior. Both pseudoscorpions and harvestmen have structures on their chelicerae that are used for grooming (papillae in pseudoscorpions, cheliceral teeth in Opiliones). Types Chelicerae can be divided into three kinds: jackknife chelicerae, scissor chelicerae, and 3-segmented chelate chelicerae. Jackknife chelicerae The jackknife chelicera is subchelate (with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
