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| Argiope anasuja |
PLOT :
I remember that this was just a second time i was on the hillock with my handycam (1 MP :-P) and i was trying take his snap with macro setting and manual focus. Later on got many visits with this buddy.
I remember that this was just a second time i was on the hillock with my handycam (1 MP :-P) and i was trying take his snap with macro setting and manual focus. Later on got many visits with this buddy.
The "typical" orb-weaver spiders (family Araneidae) are
the most common group of builders of spiral wheel-shaped webs often
found in gardens, fields and forests. Their common name is taken from
the round shape of this typical web, and the taxon was formerly also
referred to as the Orbiculariae.
Orb-weavers have eight similar eyes, legs hairy or spiny and no stridulating
organs. The Araneidae family is cosmopolitan, including many well-known
large or brightly colored garden spiders. There are 3,006 species in 168 genera worldwide, making Araneidae the third largest family of spiders known (behind Salticidae and Linyphiidae). The orb-weavers include over 10,000 species and make up about 25% of spider diversity.
However, orb-webs are also produced by members of other families. The large "golden" orb-weavers (Nephilidae) and the long-jawed orb weavers (Tetragnathidae) were formerly included in the Araneidae; they are indeed closely related to them, being part of superfamily Araneoidea. Their webs are similar to those of the typical orb-weavers, but tend to be less sophisticated and often have an irregular instead of a neat spiral arrangement of the prey-capturing threads. The cribellate or hackled orb-weavers (Uloboridae) belong to a distinct superfamily of the suborder Araneomorphae; their webs are often very sophisticated but Uloboridae use neither poison to kill their prey, nor sticky threads in their web, and probably evolved the orb structure independently. Uloboridae are cribellate, and their threads can be recognized by the fuzzy and dull appearance, which captures prey by a velcro-like mechanism. Even among the Araneoidea, the orb-webs may have evolved at least twice from the three-dimensional webs most common in this superfamily, as typically produced e.g. by tangle-web spiders (Theridiidae).
Many orb-weavers build a new web each day. Generally, towards evening, the spider will consume the old web, rest for approximately an hour, then spin a new web in the same general location. Thus, the webs of orb-weavers are generally free of the accumulation of detritus common to other species such as black widow spiders.
Most arachnid webs are vertical and the spiders usually hang with their head downward. A few webs, such as those of orb-weaver in the genus Metepiera have the orb hidden within a tangled space of web. Some Metepiera are semi-social and live in communal webs. In Mexico such communal webs have been cut out of trees or bushes and used for living fly paper . The mature female of A. anasuja always rests at the centre of the orb with her head facing downwards. The orb has an opening at the centre and when disturbed she goes through the hole and exits on the other side of the plane of the web.
However, orb-webs are also produced by members of other families. The large "golden" orb-weavers (Nephilidae) and the long-jawed orb weavers (Tetragnathidae) were formerly included in the Araneidae; they are indeed closely related to them, being part of superfamily Araneoidea. Their webs are similar to those of the typical orb-weavers, but tend to be less sophisticated and often have an irregular instead of a neat spiral arrangement of the prey-capturing threads. The cribellate or hackled orb-weavers (Uloboridae) belong to a distinct superfamily of the suborder Araneomorphae; their webs are often very sophisticated but Uloboridae use neither poison to kill their prey, nor sticky threads in their web, and probably evolved the orb structure independently. Uloboridae are cribellate, and their threads can be recognized by the fuzzy and dull appearance, which captures prey by a velcro-like mechanism. Even among the Araneoidea, the orb-webs may have evolved at least twice from the three-dimensional webs most common in this superfamily, as typically produced e.g. by tangle-web spiders (Theridiidae).
Many orb-weavers build a new web each day. Generally, towards evening, the spider will consume the old web, rest for approximately an hour, then spin a new web in the same general location. Thus, the webs of orb-weavers are generally free of the accumulation of detritus common to other species such as black widow spiders.
Most arachnid webs are vertical and the spiders usually hang with their head downward. A few webs, such as those of orb-weaver in the genus Metepiera have the orb hidden within a tangled space of web. Some Metepiera are semi-social and live in communal webs. In Mexico such communal webs have been cut out of trees or bushes and used for living fly paper . The mature female of A. anasuja always rests at the centre of the orb with her head facing downwards. The orb has an opening at the centre and when disturbed she goes through the hole and exits on the other side of the plane of the web.
Taxonomy
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Arachnida |
| Order: | Araneae |
| Family: | Araneidae |
| Genus: | Argiope |
| Species: | A. anasuja |
Synonym : Argiope plagiata
Source : 1) http://en.wikipedia.org/wiki/Orb-weaver_spider 2)http://www.richard-seaman.com/Arthropods/PhotoGalleries/Spiders/index.html
Beautiful
ReplyDeleteIs it venomous
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