When ever they want to . But some do not make webs
Spiders make unique webs because they do not want other spiders coming into their webs. They have a unique shape, design, and scent to keep other away.
yes.
NO
trapdoor spiders
orb spiders
Hobo spiders can be identified by their brown color, distinctive V-shaped pattern on their abdomen, and their fast movements. They are also known for their funnel-shaped webs.
spiders make webs
yes they do
If by "redback spiders" you mean the kind of widow spiders that grow in Australia, they make the same kind of three-dimensional tangled filament webs that all the member of their Family make. Some other kinds of spiders make orb webs, sheet webs, etc.
no, but SPIDERS spin WEBS.
Yes