The abdomen and cephalothorax are connected with a thin waist called the pedicle or the pregenital somite, a trait that allows the spider to move the abdomen in all directions.
The abdomen of the spider has no appendages except from one to four (usually three) modified pairs of movable telescoping organs called spinnerets, which produce silk.
The net-casting spider balances the two methods of running and web-spinning in its feeding habits.
The spider generally hangs in the center of its web, upside-down.
A spider does not become sexually mature until it makes the transition from nymph to imago (Foelix 1996).
A spider web preserved in amber, thought to be 110 million years old, shows evidence of a perfect orb web.
The diving bell spider does not use its web directly in prey capture, but has modified it into an underwater diving bell.
The spider symbolizes patience for its hunting with web traps, and mischief and malice for its poison and the slow death this causes.
Several spider species are also known to feed on bananas, marmalade, milk, egg yolk, and sausages in captivity (Jackson et al.
Most diversity comes with the mode of predation, for example whether the spider waits for the prey in its orb web or hunts it down.
Trigonotarbids, spider-like arachnids, were among the oldest known land arthropods.
Once a spider has reached the imago stage, it will remain there until its death.
The spider life cycle progresses through three stages: the embryonic, the larval, and the nympho-imaginal.
On average, an orb-weaving spider takes 30 minutes to an hour to weave a web.
First, they inflict mechanical damage, which, in the case of a spider that is as large as or larger than its prey, can be severe.
Most commonly made by members of the sheet-web spider families, some webs will have loose, irregular tangles of silk above them.
The spider, after spinning its web, will then wait on, or near, the web for a prey animal to become trapped.
When an insect falls onto the water and is ensnared by surface tension, the spider can detect the vibrations and run out to capture the prey.
Hence, this spider expends less energy catching prey than a primitive hunter such as the Wolf spider.
The diving bell spider does not use its web directly in prey capture, but has modified it into an underwater diving bell.
Guanine is responsible for the white markings of the European garden spider Araneus diadematus.
The spider can sense the impact and struggle of a prey animal by vibrations transmitted along the web lines.
The Brazilian Wandering Spider is a large brown spider similar to North American Wolf Spiders, but bigger and possessing a more toxic venom. It has the most neurologically active venom of all spiders, and is regarded as the most dangerous spider in the world.Oct 10, 2011
According to Amazing Spider-Man (vol. 3) #1, published in April 2014, Peter was bitten by the spider 13 years ago, and it was previously established he was 15 at the time. Peter Parker is 28 years old in the 616 Marvel Universe. This answer is subject to change, as writers may adapt the age through their stories.