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Orb Weaver

Orb Weaver

Orb Weaver

What is an orb weaver? An orb weaver is an office worker that brings more balance to the workplace by implementing new creative thinking approaches to common work-related tasks.

ORB WEAVER

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 Araneoidea. The family Arkyidae has been split off from the Araneidae. (Source: en.wikipedia.org)

orb weaver, any spider of the family Araneidae (Argiopidae or Epeiridae) of the order Araneida, a large and widely distributed group noted for their orb-shaped webs. More than 2,840 species in some 167 genera are known. (Source: www.britannica.com garden spiders (subfamily Argiopinae), which are common in grassy areas and are brightly coloured—yellow and black or red and black. The oldest known orb weaver, (Source:www.britannica.com))

Some species of large orb weavers, including Argiope savignyi and certain members of the genera Araneus, Eriophora, and Parawixia, are suspected to prey on bats, particularly vesper bats (family Vespertilionidae) and sheath-tailed bats (family Emballonuridae). (Source: www.britannica.com)

The female of one European orb weaver species bites into the abdomen of the male and holds on during mating. Although some females eat the male after mating, this practice is not common. The male of the black widow (genus (Source: www.britannica.com)

The species is found in many parts of the world and is seen along the southeast coast of the United States and in California. The spiny orb weaver spider lives on the edges of woodlands and shrubby gardens. They frequently live in nurseries as well as citrus groves. (Source: aggie-horticulture.tamu.edu The final cover is a net-like canopy made as the female moves along the mass, with several dozen coarse, rigid, dark- green and yellow threads. All parental care by spiny orb weavers occurs before the young hatch because after the female lays her egg mass, she dies. (Source:aggie-horticulture.tamu.edu))

Once out of the case, spiderlings make tiny, inconspicuous orb webs or hang from single strands. By late summer and early fall, there are significant increases in both body and web size. Unfortunately, the spiny orb weaver does not live very long. Females die after producing an egg mass, and males die six days after implanting sperm in the female. (Source: aggie-horticulture.tamu.edu)

Spiny orb weavers have a broad, hard abdomen that can be white, orange, or yellow with red markings. There are six pointy �spines� protruding from the edges. The carapace, legs, and venter are black. (Source: aggie-horticulture.tamu.edu The spiny orb weaver spins flat, round shaped webs in shrubs, trees, and in the corners of windows and similar outdoor areas of buildings. A new web is constructed each night to make sure that the structure is secure. Typically, adult females construct webs because male species hang from a single thread close by the nest of a female. (Source:aggie-horticulture.tamu.edu))

The difference between foundation silk and tufted silk is visibly distinct. The true function of these tufts is unknown, but some studies suggest that the tufts serve as little flags to warn birds and prevent them from flying into and destroying the web. The spiny orb weaver�s web may be quite close to the ground. Females live solitarily on individual webs and up to three males may dangle on silk threads nearby. (Source: aggie-horticulture.tamu.edu)

Sometimes several insects are caught at the same time. The spiny orb weaver must find and paralyze them all. If it is not necessary to relocate them elsewhere on her web, the spider may just feed on them where they are, then come back to them as she pleases. She feeds upon the liquefied insides of her meal, and the drained carcasses are then discarded from the web. (Source: aggie-horticulture.tamu.edu)

Orb weaver spider webs have non-sticky silk used for "radial threads" which radiate from a central point like spokes on a bicycle wheel. The non-sticky silk is also used for "frame threads" which encircle the web like a bicycle wheel to hold the radial threads in place and to attach the web to supports such as plant stems. "Spiral threads" are composed of sticky silk arranged in a spiral pattern emanating from the center of the web; it's the sticky silk that captures the spider's prey. (Source: bygl.osu.edu Two of our larger native spiders found in Ohio are orb weavers (family Araneidae) so-named because of their circular (orb) webs. The webs are intricate structures involving both sticky and non-sticky silk. (Source:bygl.osu.edu))

As with most orb weavers, both the yellow garden spider and whitebacked garden spider practice a "wrap-and-bite" strategy to quickly dispatch large prey such as grasshoppers with minimal risk to the web … and the spider's health. When a victim becomes entangled in their webs, the spiders rush over to rapidly spin their hapless prey while wrapping them in a thick shroud of dense webbing. (Source: bygl.osu.edu)

This orb weaver spider is much smaller compared to Argiope spiders. However, it commonly and inconveniently stretches its web across forest trails. I passed through several webs in rapid succession yesterday and couldn't decide who was more perturbed; me or the spiders. Eventually, I learned to do a better job of scanning the trail ahead. (Source: bygl.osu.edu)

Trashline orb weavers (Cyclosa spp.) aren't typically "in your face" spiders unless you're sticking your face inside shrubs. Of course, some of us do as we look closely at plant features. Look closely between the branch tips of shrubs and you may spot these diminutive spiders in their beautiful orb webs. The silk in their stabilimentum enshrouds the drained bodies of previous victims; the morbid structure is responsible for the "trashline" common name. (Source: bygl.osu.edu)

Spiders eat insects and research has consistently shown they remove a significant number of pests that we would have to deal with otherwise. Although orb weavers can quickly replace damaged or destroyed webs, we should try and avoid adding to their workload. (Source: bygl.osu.edu)

On the other hand, if an orb weaver constructs its web in an unwanted location, continually removing the web will eventually cause the spider to take a hint and relocate elsewhere. If you see the spider on the web, just shoo it off before destroying their web so you don't accidentally commit and arachnicidal act. (Source: bygl.osu.edu)

Name : Orb Weaver Scientific Name: Neoscona spp. Location: Mulashi, Pune. Descrption: One of the large orb weaving spiders, use to build a web with concentric rings and most of the times active during night. Name : Orb Weaver Scientific Name: Neoscona spp. Location: Mulashi, Pune. Descrption: One of the large orb weaving spiders, use to build a web with concentric rings and most of the times active during night. orb weaver spider stock pictures, royalty-free photos & images (Source: www.istockphoto.com)

The orb weaver spider group is comprised of a large number of species thus making it difficult to distinguish them from other spider groups and from each other. In fact, the Orb-weaver spider family, Araneidae, is one of the most variable in size and appearance of all spider families. However, the most observable appearance of orb weavers isn't necessarily their appearance, but the appearance of the large webs they create. In general, orb weavers construct organized, circular grid webs that are similar in shape to webs depicted in Halloween decorations. More specifically, orb weaver webs are made of radial strands of silk that look like the spokes of a wheel with the spokes connected by numerous concentric circular silk strands. The web of the garden orb weaver spider is very large and can measure up to three feet in diameter. When observed in their natural habitats, orb weavers will usually be seen hanging head down in their web. (Source: www.orkin.com)

Like all other spiders, orb weavers have a cephalothorax (a fused-together head and thorax), abdomen, 8 legs and fang-like mouthparts called chelicera. Many orb weavers are brightly colored, have hairy or spiny legs and a relatively large abdomen that overlaps the back edge of the cephalothorax. Abdomens vary between species. Some orb-weaver spiders have spiny, smooth, or irregularly shaped abdomens. Most nocturnal orb weavers are usually brown or gray in color. Diurnal species exhibit bright colors of yellow or orange along with black markings. (Source: www.orkin.com)

Since orb weavers are not hunters or wanderers, they will sit in their web or perhaps move off their web and wait for prey to get tangled in their web. Should the spider move off the web, it will remain nearby and hidden in a protected site such as some rolled up leaves or on the branch of a plant. However, the spider remains aware of prey that may become trapped in the web by a trap line of silk that will vibrate and alert the spider if something enters the web. If a prey insect is trapped in the web, the trap line vibrates notifying the spider rush to the web, bite and paralyze the prey and wrap it in silk for later consumption. If something non-eatable is trapped, the spider will either just ignore it or remove it from the web and go back to its protected hiding place. Orb weavers are most often noticed by homeowners in the late summer and fall since the adult spiders have attained their largest size and have constructed the largest number of webs. (Source: www.orkin.com)

Despite their large size and fearsome appearance, orb weavers are not considered to be medically important. Orb weavers rarely bite and only do so when threatened and unable to escape. If bitten by an orb weaver, the bite and injected venom is comparable to that of a bee sting, with no long-term implications unless the bite victim happens to be hyper-allergic to the venom. (Source: www.orkin.com Male orb weavers are much smaller than females and the male's role in to mate with the female. Since the males are small, it is not uncommon for them to become the female's first meal after mating. Female orb weavers produce one or more egg sacs and each sac may contain up to several hundred eggs. (Source:www.orkin.com))

Preventing orb weaver spiders is usually unnecessary unless an orb weaver builds a web in a location frequented by people, in which case someone could be adversely affected by arachnophobia, the extreme fear of spiders. Some key preventive things a homeowner can do is reduce the population of insects that serve as food for spiders, seal up holes, cracks and gaps in the home's exterior to prevent entrance by spiders into the home's living spaces and remove ground litter and other sites that serve as spider harborage. Should the homeowner need assistance in control of these or any other spiders, contact your pest management professional (PMP) and request an inspection. Your PMP can then use his inspection findings to prepare a comprehensive pest management plan that will effectively and efficiently deal with the specific pest problem. (Source: www.orkin.com)

Simple metamorphosis: like all spiders, young orb-weaver spiders hatch from eggs and look like tiny adults. They shed their skin as they grow. Many Kentucky orb weavers only live for one year or less. At the end of the summer, many female orb weaver species produce a large amount of eggs (sometimes hundreds) that they wrap in a silken egg case. The young spiders hatch in the spring. (Source: www.uky.edu Orb weavers are very common in Kentucky, and can be found almost anywhere. They need weeds, fences, trees, walls, or other upright structures to build their webs. Orb weavers will eat almost anything small enough to get trapped in their webs, especially small insects and other spiders. Like many web-building spiders, orb weavers tend to have poor vision: they don't need to see very well to hunt because they can "feel" whenever prey gets caught in their webs. (Source:www.uky.edu))

Furrow Spiders are common orb-weaver spiders often found around homes and other urban areas. Some furrow spiders are known to overwinter as adults: this is noteworthy because typical orb weaver species live for only one season, dying before winter. Several species of furrow spiders live in Kentucky and they all look very similar. Furrow spiders formerly belonged to the genus Nuctenea, but now belong to the genus Larinoides. These species grow to about 1/2" long. (Source: www.uky.edu www.uky.edu))One of Kentucky's largest spiders is an orb weaver called the Black and Yellow Argiope, Argiope aurantia, pictured below. Commonly called "garden spiders," these orb weavers can be almost 3 inches long from leg tip to leg tip. Argiope spiders are very common in backyard gardens, and have given a fright to many a homeowner. Although they are large and intimidating, their bite is only dangerous to people who experience severe allergic reactions to insect and spider bites. The picture below was sent to us by Mindy Crosby from Louisville, KY. (Source:

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