Orb-weaver spider

Araneidaeorb-weaver spidersorb weaveraraneidorb-weaving spiderorb-web spiderorb-weaverAraneinaeorb spiderorb web spider
Orb-weaver spiders or araneids are members of the spider family Araneidae.wikipedia
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Spider

Araneaespidersegg sac
Orb-weaver spiders or araneids are members of the spider family Araneidae.
It now appears that the spiral orb web may be one of the earliest forms, and spiders that produce tangled cobwebs are more abundant and diverse than orb-web spiders.

Mastophora (spider)

MastophoraMastophora'' (spider)
Members of the genera Mastophora in the Americas, Cladomelea in Africa, and Ordgarius in Australia produce sticky globules, which contain a pheromone analog.
Mastophora, also known as bolas spiders, is a genus of orb-weaver spiders first described by E. L. Holmberg in 1876.

Spider silk

silkgossamersilken
Generally, orb-weaving spiders are three-clawed builders of flat webs with sticky spiral capture silk.

Bolas spider

Bolas spiders
Both types of bolas spiders are highly camouflaged and difficult to locate.
A bolas spider is any of several species of orb-weaver spider that, instead of spinning the typical web, hunt by using a sticky 'capture blob' of silk on the end of a line, known as a 'bolas'.

Spiny orb-weaver

Gasteracantha
The spiny orb-weaving spiders in the genera Gasteracantha and Micrathena look like plant seeds or thorns hanging in their orb-webs.
Gasteracantha (known as spiny-backed orb-weavers, spiny orb-weavers, or spiny spiders) is a genus of orb-weaver spiders first named by Carl Jakob Sundevall in 1833.

Metepeira

A few webs, such as those of orb-weavers in the genus Metepeira have the orb hidden within a tangled space of web.
Metepeira is a genus of orb-weaver spiders first described by F. O. Pickard-Cambridge in 1903.

Ordgarius

Members of the genera Mastophora in the Americas, Cladomelea in Africa, and Ordgarius in Australia produce sticky globules, which contain a pheromone analog.
Ordgarius is a genus of orb-weaver spiders first described by Eugen von Keyserling in 1886.

Micrathena

The spiny orb-weaving spiders in the genera Gasteracantha and Micrathena look like plant seeds or thorns hanging in their orb-webs.
Micrathena, known as spiny orbweavers, is a genus of orb-weaver spiders first described by Carl Jakob Sundevall in 1833.

Argiope bruennichi

Wasp spiderAranea formosaArgiope bruennichii
In the cannibalistic and polyandrous orb-web spider Argiope bruennichi, the much smaller males are attacked during their first copulation and are cannibalized in up to 80% of the cases.
Argiope bruennichi (wasp spider) is a species of orb-web spider distributed throughout central Europe, northern Europe, north Africa, parts of Asia, the Azores archipelago, as well as recent sightings in North American states such as North Carolina and Ohio.

Mesozygiella

Mesozygiella dunlopi
The oldest known true orb-weaver is Mesozygiella dunlopi, from the Lower Cretaceous.
Mesozygiella is an extinct genus of orb-weaving spider (family Araneidae), with one known species, Mesozygiella dunlopi, dating from the Early Cretaceous, making it the earliest orb-weaver yet discovered.

Spider web

webcobwebwebs
Generally, orb-weaving spiders are three-clawed builders of flat webs with sticky spiral capture silk.

Acacesia

Acacesia is a genus of orb-weaver spiders first described by Eugène Simon in 1895.

Aculepeira

Aculepeira is a genus of orb-weaver spiders first described by R. V. Chamberlin & Wilton Ivie in 1942.

Latrodectus

black widow spiderblack widowwidow spider
Thus, the webs of orb-weavers are generally free of the accumulation of detritus common to other species, such as black widow spiders.
The ultimate tensile strength and other physical properties of Latrodectus hesperus (western black widow) silk are similar to the properties of silk from orb-weaving spiders that had been tested in other studies.

Araneus

EpeiraAranea
Araneus is a genus of common orb-weaving spiders.

Cladomelea

Members of the genera Mastophora in the Americas, Cladomelea in Africa, and Ordgarius in Australia produce sticky globules, which contain a pheromone analog.
Cladomelea is a genus of African orb-weaver spiders first described by Eugène Simon in 1895.

Web decoration

stabilimentumweb decorationsstabilimenta
One feature of the webs of some orb-weavers is the stabilimentum, a crisscross band of silk through the center of the web.
Although web decorations are common in a number of spider species in the families Araneidae, Tetragnathidae and Uloboridae, they are probably best known from spiders of the genus Argiope.

Acusilas

Acusilas is a genus of orb-weaver spiders first described by Eugène Simon in 1895.

Austracantha

Austracantha minax
It is a member of the family Araneidae (the orb-weavers) and is endemic to Australia.

Anepsion

Anepsion is a genus of orb-weaver spiders first described by Embrik Strand in 1929.

Arachnura

Arachnura is a genus of orb-weaver spiders first described by A. Vinson in 1863.

Sexual dimorphism

sexually dimorphicdimorphicdimorphism
Sexual dimorphism refers to physical differences between males and females of the same species.
In addition, female fecundity is positively correlated with female body size and large female body size is selected for, which is seen in the family Araneidae.

Acantharachne

Acantharachne is a genus of African orb-weaver spiders first described by Albert Tullgren in 1910.

Acanthepeira

Acanthepeira is a genus of orb-weaver spiders first described by George Marx in 1883.

Araniella

Araniella is a genus of orb-weaver spiders first described by R. V. Chamberlin & Wilton Ivie in 1942.