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Araneus Gemmoides
''Araneus gemmoides'', commonly known as the jewel spider (a name shared with ''Austracantha minax'') and cat-faced spider (a name shared with ''Araneus gemma''), is a common, outdoor, orb-weaver spider found in Canada and the USA. It is considered harmless and has a low-toxicity venom. ''A. gemmoides'' is a useful natural predator for insects. ''A. gemmoides'' makes its webs near lights, closed spaces, and on the sides of buildings. It can also be found under wood, overhangs, or guarded places such as animal burrows. The species occurs in varying colors, but is easily identified by the two horn-shaped growths on its relatively large abdomen. Its color changes from summer to winter. The females die within days of laying a single egg sac with hundreds of eggs. Egg sacs can survive over winter, and the emerging spiderlings eat their siblings. The babies ride strands of silk in warm air currents, which are able to transport them to locations miles away. Females have a larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cat Faced Spider From Below
The cat (''Felis catus'') is a domestic species of small carnivorous mammal. It is the only domesticated species in the family Felidae and is commonly referred to as the domestic cat or house cat to distinguish it from the wild members of the family. Cats are commonly kept as house pets but can also be farm cats or feral cats; the feral cat ranges freely and avoids human contact. Domestic cats are valued by humans for companionship and their ability to kill rodents. About 60 cat breeds are recognized by various cat registries. The cat is similar in anatomy to the other felid species: they have a strong flexible body, quick reflexes, sharp teeth, and retractable claws adapted to killing small prey. Their night vision and sense of smell are well developed. Cat communication includes vocalizations like meowing, purring, trilling, hissing, growling, and grunting as well as cat-specific body language. Although the cat is a social species, they are a solitary hunter. As a preda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austracantha Minax
''Austracantha'' is a genus of spider with a single species, ''Austracantha minax'', commonly known as the jewel spider or the Christmas spider. It is a member of the family Araneidae (the orb-weavers) and is endemic to Australia. They are relatively small spiders, reaching a maximum total body length of only around for females, and for males. Their abdomen has six distinctive projections ("spines") that makes them easy to identify. They are predominantly a shiny black, with variable white, yellow, and orange patterns. Melanistic forms also occur during autumn. They are facultatively gregarious, and can be found in large aggregations of overlapping orb webs. They feed on small flying insects that get entangled in their webs. They are harmless to humans, though the webs can be a nuisance for bushwalkers. They are most abundant during the summer months. Taxonomy and nomenclature ''Austracantha minax'' is most commonly known as "jewel spiders" due to their body colouration. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araneus Gemma
''Araneus gemma'', commonly known as the cat-faced spider (a name shared with '' Araneus gemmoides''), is a common outdoor orb-weaver spider found in the western United States and Canada. Like most Araneus species, ''A. gemma'' is harmless to humans. It contains a venomous toxin of low molecular weight called argiotoxin Argiotoxins represent a class of polyamine toxins isolated from the orb-weaver spider ('' Araneus gemma'' and '' Argiope lobata''). The orb-weaver spiders, also known aaraneids belong to the Araneidae spider family. This type of spider is found i ..., that antagonizes the actions of the neurotransmitter glutamate. Dopamine was also identified in the venom of ''A. gemma'' in a concentration of 4.3 nM. The web silk of the ''A. gemma'' ranges from 1 to 4 μm in diameter.David Kaplan, Kevin McGrathProtein-Based MaterialsSpringer, 1997; page 113. . References External links gemma Spiders of North America Spiders described in 1888 {{Araneidae-st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orb-weaver Spider
Orb-weaver spiders are members of the spider family Araneidae. They are the most common group of builders of spiral wheel-shaped webs often found in gardens, fields, and forests. The English word "orb" can mean "circular", hence the English name of the group. Araneids have eight similar eyes, hairy or spiny legs, and no stridulating organs. The family has a cosmopolitan distribution, including many well-known large or brightly colored garden spiders. With 3,108 species in 186 genera worldwide, the Araneidae comprise the third-largest family of spiders (behind the Salticidae and Linyphiidae). Araneid webs are constructed in a stereotypical fashion, where a framework of nonsticky silk is built up before the spider adds a final spiral of silk covered in sticky droplets. Orb webs are also produced by members of other spider families. The long-jawed orb weavers (Tetragnathidae) were formerly included in the Araneidae; they are closely related, being part of the superfamily Arane ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Alberta Museum
The Royal Alberta Museum (RAM) is a museum of human and natural history in Edmonton, Alberta, Canada. The museum is located in Downtown Edmonton, north of City Hall. The museum is the largest in western Canada with more than exhibition space and in total. The museum was established by the Government of Alberta in December 1967 as the Provincial Museum of Alberta. The museum received royal patronage from Queen Elizabeth II, and was renamed the Royal Alberta Museum in 2005. In 2011, plans were announced to move the museum to a new building. The museums continued to operate from its original building in Glenora, Edmonton until it was closed to the public in December 2015. Although the museum was closed to the public, a number of its departments continued to operate, either preparing the museum's collection for the move, or conducting fieldwork. The new building was completed in August 2016, and was opened to the public in October 2018. The museum features expansive galleries ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell Media
Bell Media Inc. ( French: ) is a Canadian company formed by the amalgamation of several companies. Establishment (2011–13) On December 9, 2011, the Ontario Teachers' Pension Plan announced the sale of its majority stake in Maple Leaf Sports & Entertainment to BCE and its rival, Rogers Communications, in a deal valued at around $1.32 billion. Additionally, Larry Tanenbaum increased his stake in the company to 25%. The deal closed in August 2012. On March 16, 2012, BCE announced that it had entered in an agreement to acquire Montreal-based broadcaster Astral Media for an estimated value at $3.38 billion; the assets of which were to be incorporated into Bell Media. The acquisition was primarily centered on Astral's premium services (such as The Movie Network and its stake in HBO Canada) and its French-language radio and television stations. Bell planned to use Astral's premium offerings to enhance its own multi-platform services to compete against the likes of services such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Lethbridge
, mottoeng = ''Let there be light'' , type = Public , established = , academic_affiliations = Universities Canada , endowment = $73 million (2019) , chancellor = Charles Weaselhead , president = Michael J. Mahon , provost = Erasmus Okine , faculty = 491 , students = 9,532 , undergrad = 8,231 , postgrad = 753 , address = 4401 University DriveLethbridge, AlbertaT1K 3M4 , coor = , campus = Urban , colours = Blue and Gold , nickname = Pronghorns , sporting_affiliations = U Sports, CWUAA, , mascot = Luxie — the pronghorn , website = The University of Lethbridge (also known as uLethbridge, uLeth, and U of L) is a public comprehensive and research higher education institution located in Lethbridge, Alberta, Canada, wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Araneidae Species
These pages list all described species of the spider family Araneidae Orb-weaver spiders are members of the spider family Araneidae. They are the most common group of builders of spiral wheel-shaped webs often found in gardens, fields, and forests. The English word "orb" can mean "circular", hence the English name ... as of Nov. 5, 2013. * List of Araneidae species: A * List of Araneidae species: B–F * List of Araneidae species: G–M * List of Araneidae species: N–Z Lists of spider species by family {{DEFAULTSORT:Araneidae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider Families
Spider taxonomy is that part of taxonomy that is concerned with the science of naming, defining and classifying all spiders, members of the Araneae order of the arthropod class Arachnida with more than 48,500 described species. However, there are likely many species that have escaped the human eye to this day, and many specimens stored in collections waiting to be described and classified. It is estimated that only one third to one half of the total number of existing species have been described. Arachnologists currently divide spiders into two suborders with about 129 families. Due to constant research, with new species being discovered every month and others being recognized as synonyms, the number of species in the families is bound to change and only reflects the present state of knowledge. Nevertheless, the species numbers given here are useful as a guideline – see the table of families at the end of the article. History Spider taxonomy can be traced to the work of Swed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araneus
''Araneus'' is a genus of common orb-weaving spiders. It includes about 650 species, among which are the European garden spider and the barn spider. The genus was erected by Carl Alexander Clerck in 1757. Description Spiders of this genus present perhaps the most obvious case of sexual dimorphism among all of the orb-weaver family, with males being normally to the size of females. In ''A. diadematus'', for example, last-molt females can reach the body size up to 1 in (2.5 cm), while most males seldom grow over 0.3 in (1 cm), both excluding leg span. Males are differentiated from females by a much smaller and more elongated abdomen, longer legs, and the inability to catch or consume prey bigger than themselves. In females, the epigyne has a long scape (a tongue-like appendage). Male pedipalps have a hook-like terminal apophysis. Abdominal tubercles are present anterolaterally. Taxonomic history ''Araneus'' was, for much of its history, called ''Epeira''. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiders Of North 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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