Araneus

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Araneus
Temporal range: Cretaceous–present
Araneus diadematus2.jpg
European garden spider ( Araneus diadematus )
Araneus quadratus MHNT.jpg
Four-spot orb-weaver ( Araneus quadratus )
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Araneidae
Tribe: Araneini
Genus: Araneus
Clerck, 1757
Type species
Araneus diadematus
Clerck, 1757
Species

See list.

Diversity
c. 650 species
Synonyms
  • EpeiraWalckenaer, 1805
  • AteaC.L. Koch, 1837
  • EpiraAgassiz, 1846 (Unj. Emend.)
  • AmamrotypusArcher, 1951
  • CambridgepeiraArcher, 1951
  • ConaraneaArcher, 1951
  • ConepeiraArcher, 1951
  • CathaistelaArcher, 1958
  • NeosconellaF.O.P.-Cambridge, 1903

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.

Contents

Description

Marbled orb-weaver (Araneus marmoreus), Temagami, Ontario Marbled orbweaver, Temagami, Ontario.jpg
Marbled orb-weaver ( Araneus marmoreus ), Temagami, Ontario

Spiders of this genus present perhaps the most obvious case of sexual dimorphism among all of the orb-weaver family, with males being normally 13 to 14 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

Marbled orb-weaver (Araneus marmoreus) Marbled Orb Weaver.jpg
Marbled orb-weaver ( Araneus marmoreus )

Araneus was, for much of its history, called Epeira. The latter name is now considered a junior synonym of Araneus, as the latter was published almost 50 years earlier.

Epeira was first coined by Charles Athanase Walckenaer in 1805, [1] for a range of spiders now considered Araneidae (orb-weavers). Over time, a rather diverse set of spiders was grouped under this genus name, including species from the modern families Araneidae, Mimetidae (Mimetus syllepsicus described by Nicholas Marcellus Hentz in 1832), Tetragnathidae, Theridiidae, Theridiosomatidae ( Theridiosoma gemmosum , described by Ludwig Carl Christian Koch in 1877 as Theridion gemmosum), Titanoecidae ( Nurscia albomaculata , described by Hippolyte Lucas in 1846 as Epeira albo-maculata) and Uloboridae ( Uloborus glomosus , described by Walckenaer in 1842 as Epeira glomosus). [2] Epeira cylindrica O. P.-Cambridge, 1889 was at a time placed in the Linyphiidae and is considered incertae sedis , as is "Araneus" cylindriformis(Roewer, 1942).

Epeira was synonymized with the genus Aranea by William Elford Leach in 1815, and with Araneus by Eugène Simon in 1904, though this synonymy was not universally recognized. [3]

Throughout the 19th century, Epeira was used as a catch-all genus, similar to the once ubiquitous salticid genus Attus . However, from 1911, to its last mention in 1957, only very few authors continued to use the genus in their publications, notably Franganillo (1913, 1918), Hingston (1932), Kaston (1948), and Marples (1957). Chamberlin and Ivie published a new species, Epeira miniata, in 1944, which was rejected.

Jean-Henri Fabre refers to Argiope spiders as Epeira in his 1928 book The Life of the Spider (La Vie des araignées), within the family "Epeirae". James Henry Emerton also uses the genus Epeira in his 1902 book The Common Spiders of the United States, but refers to spiders mostly now considered Araneus. The popular 1893 book American Spiders and their Spinningwork by Henry Christopher McCook also uses Epeira extensively.

The short documentary Epeira diadema (1952) by Italian director Alberto Ancilotto was nominated for an Oscar in 1953. It is about the spider today known as Araneus diadematus .

Venom

Araneus spider venoms vary in toxicity, but often deliver a dry bite (8 of 10 occasions).[ citation needed ] Females bite more often than males, which would rather flee or feign death.

See also

Related Research Articles

<i>Argiope</i> (spider) Genus of spiders

The genus Argiope includes rather large spiders that often have a strikingly coloured abdomen. These spiders are distributed throughout the world. Most countries in tropical or temperate climates host one or more species that are similar in appearance. The etymology of Argiope is from a Latin word argentum meaning silver. The carapace of Argiope species is typically covered in silvery hairs, and when crawling in the sun, they reflect it in a way that gives them a metallic, white appearance.

<i>Araneus diadematus</i> Species of spider

The spider species Araneus diadematus is commonly called the European garden spider, cross orbweaver, diadem spider, orangie, cross spider, and crowned orb weaver. It is sometimes called the pumpkin spider, although this name is also used for a different species, Araneus marmoreus. It is an orb-weaver spider found in Europe, where it is native, and North America, where it was introduced.

<i>Eresus</i> Genus of spiders

Eresus, also called ladybird spiders, is a genus of velvet spiders that was first described by Charles Athanase Walckenaer in 1805. Members of the genus formerly called Eresus cinnaberinus or Eresus niger are now placed in one of three species: Eresus kollari, Eresus sandaliatus and Eresus moravicus.

<i>Missulena</i> Genus of spiders

Missulena is a genus of mygalomorph spiders in the family Actinopodidae. It was first described by Charles Walckenaer in 1805, and is a senior synonym of Eriodon. M. tussulena is found in Chile, but the rest are indigenous to Australia. They are sometimes referred to as "mouse spiders" from the now-disproven belief that they dig deep burrows similar to those of mice. Scotophaeus blackwalli is also called a "mouse spider", but it is smaller and not closely related.

<i>Araneus alsine</i> Species of spider

Araneus alsine, the strawberry spider or orange wheelweaving spider, is a species of the orb-weaving spider family, Araneidae.

<i>Neoscona</i> Genus of spiders

Neoscona, known as spotted orb-weavers and barn spiders, is a genus of orb-weaver spiders (Araneidae) first described by Eugène Simon in 1895 to separate these from other araneids in the now obsolete genus Epeira. The name Neoscona was derived from the Greek νέω, meaning "spin", and σχοῖνος, meaning "reed" They have a mostly pantropical distribution and one species, Neoscona adianta, has a palearctic distribution. As of April 2019 there are eight species that can be found in the United States and Canada:

Nephilengys is a genus of tropical spiders of the family Nephilidae, consisting of two currently described species. The genus Nephilingis has been split off from this genus. Both genera have been called hermit spiders from the habit staying in their retreats during the day; the name eunuch spiders has been used for Nephilengys alone. Males may sever parts of their palpal bulbs after copulation.

<i>Cyrtophora citricola</i> Species of spider

Cyrtophora citricola, also known as the tropical tent-web spider, is an orb-weaver spider in the family Araneidae. It is found in Asia, Africa, Australia, Costa Rica, Hispaniola, Colombia, and Southern Europe and in 2000, it was discovered in Florida. C. citricola differs from many of its close relatives due its ability to live in a wide variety of environments. In North America and South America, the spider has caused extensive damage to agricultural operations.

Attus is a taxon name that is now considered a junior synonym of Salticus. In the early 19th century, most jumping spiders were grouped together as a single genus under the name Attus.

<i>Neoscona crucifera</i> Species of spider

Neoscona crucifera is an orb-weaver spider in the family Araneidae. It is found in the United States from Maine to Florida in the east, to Minnesota in the Midwest, to Arizona in the southwest, southern California coastal communities and in Mexico. Its common names include Hentz orbweaver, spotted orbweaver, and barn spider. The name "barn spider" is also commonly used for a different spider, Araneus cavaticus.

Molinaranea magellanica is a species of orb-weaver spider endemic to Chile, Argentina, the Juan Fernández Islands and the Falkland Islands. It is also known as the Falklands green spider. It is the largest endemic spider known to exist in the Falklands.

<i>Tetragnatha extensa</i> Species of spider

Tetragnatha extensa is a species of spider found across the Northern Hemisphere. It has an elongate body, up to 11 mm (0.43 in) long, and adopts a straight line posture when alarmed. It lives on low vegetation in damp areas, and feeds on flying insects which it catches in its web.

<i>Araneus mitificus</i> Species of spider

Araneus mitificus, commonly known as the kidney garden spider or pale orb weaver is a species of orb-weaver spider found in South, East, and Southeast Asia.

<i>Zilla diodia</i> Species of spider

Zilla diodia is an orb-weaver spider species found from Europe to Azerbaijan. This species was originally described by Charles Athanase Walckenaer in 1802 as Aranea diodia.

<i>Plebs eburnus</i> Species of spider

The spider species Plebs eburnus is commonly referred to as the eastern grass orb-weaver or the eastern bush orb-weaver, and sometimes more simply as the bush orb-weaver. It is an orb-weaver spider from the family Araneidae endemic to Australia. It is a very common spider with distinctive white markings, which give it the species name eburnus pertaining to ivory. It is found in scrub and tall grasses where the female constructs a vertical web usually no more than 2 metres from the ground, and stays there day and night. The web of some of these spiders has been seen to be decorated with nearly vertical stabilimentum. The stabilimentum of the related P.cyphoxis is usually observed vertical.

<i>Neoscona oaxacensis</i> Species of spider

Neoscona oaxacensis, known as western spotted orbweaver and zig-zag spider, is a species of spider in the family Araneidae. It is distributed in the Americas, from Kansas and California south to Venezuela and Peru, including the Galápagos Islands.

<i>Novakiella</i> Genus of spiders

Novakiella is a genus of South Pacific orb-weaver spiders containing the single species, Novakiella trituberculosa that has only been found in Australia and New Zealand.

<i>Araneus trifolium</i> Species of spider

Araneus trifolium, the shamrock orbweaver, is a species of orb weaver in the family Araneidae. It is found throughout the USA and in Canada.
The abdomen of Araneus trifolium can have various colors. Most commonly, it is seen in a beige or brown color. Occasionally, the abdomen of the spider has a greenish touch to the brown color or it may even be yellow or orange. In the latter case, Araneus trifolium is sometimes confused with the orange orb weaver species Araneus marmoreus, also called pumpkin spider. The shamrock spider can be distinguished from other orb weaver species by the several white dots on its back. The legs of Araneus trifolium are usually brown or beige colored with several white bands around the joints.
The shamrock spider creates a web to catch its prey. Small flying insects who fly into the web will get stuck in the sticky net. The web of an orb weaver can be up to two feet (60cm) in diameter.
The bite of a shamrock spider can be painful but it is not dangerous for humans with effects comparable to a bee sting.

<i>Tmarus piger</i> Species of spider

Tmarus piger is a species of crab spider belonging to the family Thomisidae.

<i>Salsa</i> (spider)

Salsa is an Australasian genus of orb-weaver spiders.

References

  1. Walckenaer, Charles Athanase (1805): Tableau des aranéides ou caractères essentiels des tribus, genres, familles et races que renferme le genre Aranea de Linné, avec la désignation des espèces comprises dans chacune de ces divisions. Paris.
  2. Platnick, Norman I. (2009): The World Spider Catalog, version 9.5. American Museum of Natural History.
  3. Bonnet, Pierre (1955): Bibliographia Araneorum. Vol. 2.