The white-backed spider is a common name for the Steatoda nobilis, a species of spider known for the white marking on its back.
The spider with a white sack on its back is likely a female wolf spider carrying her egg sac.
The worst kind.
a tarantula!
could be a male crab spider, or a writing spider.
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The spider you are referring to is likely the black widow spider. The female black widow has a distinct red hourglass shape or white crescent on its abdomen. They are known for their venomous bite, so caution should be taken when encountering them.
A brown spider that has a white diamond on its back is known as a Parson spider. This spider does have a mildly venomous bite.
The spider with a big white body is likely a white orb-weaver spider.
The spider you are describing is likely the Spiny Orb-weaver spider (Gasteracantha cancriformis), also known as the Jewel Spider. It is recognized by its unique shape and coloration, with a white abdomen that has a pattern resembling a skull and bright green legs. These spiders are not harmful to humans and are known for their striking appearance.
The zebra spider has a stripe on its back.
The zebra spider has stripes on its back.
a redback spider