''Neoscona'', known as spotted orb-weavers and barn spiders, is a

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 com ...

of orb-weaver spiders (Araneidae) first described by

Eugène Simon Eugène Louis Simon (; 30 April 1848 – 17 November 1924) was a French naturalist who worked particularly on insects and spiders, but also on birds and plants. He is by far the most prolific spider taxonomist in history, describing over 4, ...

in 1895 to separate these from other araneids in the now obsolete genus '' Epeira''. The name ''Neoscona'' was derived from the Greek , meaning "spin", and , meaning " reed" They have a mostly

pantropical A pantropical ("all tropics") distribution is one which covers Tropics, tropical regions of both hemispheres. Examples of species include caecilians, modern sirenians and the plant genera ''Acacia'' and ''Bacopa''. ''Neotropical'' is a zoogeogra ...

distribution and one species, ''

Neoscona adianta ''Neoscona adianta'' is a species of spider belonging to the family Araneidae. It occurs in North Africa and Europe to Central Asia. The coloration includes a brown to red abdomen marked with a series of black-bordered white or cream triangles. ...

'', has a

palearctic The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Sibe ...

distribution. there are eight species that can be found in the United States and Canada:

Description

''Neoscona'' species are among the most common spiders in North America and are found throughout most parts of the world. There are large variations in the dorsal patterns and coloration of the abdomen, even in a single species. Most have a light color with wavy edges along the mid-line, and darker swirls either side of that. Ventral abdominal patterns may consist of a dark area bordered by white, roughly forming a square. In adults the pattern can be faded. The venter of the abdomen is dark bordered on the sides by white spots. ''Neoscona'' can be difficult to distinguish from species of ''

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 prese ...

'' without close examination of the

carapace A carapace is a Dorsum (biology), dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tor ...

. ''Neoscona'' have a characteristic dorsal groove on the

that is parallel with the long axis of the body. The dorsal grooves of ''Araneus'' are transverse or angular, though they are sometimes so small that they appear as dimples on the dorsal surface. With the leg arrangement, the first are the longest, the second are second longest and the third are the shortest. The largest eyes are the anterior medians, next or subequal are posterior medians and the secondary eyes are slightly smaller. The webs are usually vertical with about twenty radii and an open hub at the centre. Some species have been recorded as retreating to a leaf during the day.

Species

there are 123 species worldwide:

Gallery

File: Neoscona arabesca P1300817b.jpg , '' Neoscona arabesca'' Oklahoma, USA File: Neoscona crucifera, Meadowood Farm SRMA, Mason Neck, Virginia.jpg , ''

Neoscona crucifera ''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 ...

'' with prey Virginia, USA File: Red-femurred Spotted Orbweaver - Neoscona domiciliorum, Leesylvania State Park, Woodbridge, Virginia.jpg , '' Neoscona domiciliorum ''Virginia, USA File:NeoscanaOaxacensisLagunaBeach1.JPG, '' Neoscona oaxacensis'' California, USA Neoscona theisi 1392.jpg, '' Neoscona theisi'' Queensland, Australia Neoscona theisi (ventral) 4146.jpg, '' Neoscona theisi'' female ventral, Queensland, Australia

References

External links

Comparison of larger male orb-weavers of the United States and Canada
at BugGuide

by the

University of Florida The University of Florida (Florida or UF) is a public land-grant research university in Gainesville, Florida. It is a senior member of the State University System of Florida, traces its origins to 1853, and has operated continuously on its ...

{{Taxonbar, from=Q1933421 Araneomorphae genera Cosmopolitan spiders Taxa named by Eugène Simon