A black spider with yellow stripes is a garden orb spider. These are very common and not poisonous to humans.
The spider you are describing is likely a species of the orb-weaving spider called the Marbled Orbweaver (Araneus marmoreus). This species has a distinct bright neon yellow body with red or orange stripes on its abdomen, making it easily recognizable.
The spider you are referring to is likely the yellow sac spider. Yellow sac spiders are brown with two yellow stripes on their back and are commonly found in California. They are not considered aggressive towards humans but can deliver a painful bite if provoked.
It is possible that you are describing a Marbled Orbweaver spider, which is black with yellow or white markings. This spider can be found in North America and is not harmful to humans. It is important to observe from a safe distance.
I believe this spider friend of yours is a jumping spider, although there are lots of other spiders out there who are yellow, grey, black, orange and brown.
Argiope aurantia is a black spider with yellow stripes. Its common names join such different physical descriptions as black and yellow garden spider, corn spider, writing spider, and zipper spider. The black and yellow garden spider generally may be considered harmless to humans.
grass spider
I think you are referring to a garden spider.
The spider you are describing is likely a species of the orb-weaving spider called the Marbled Orbweaver (Araneus marmoreus). This species has a distinct bright neon yellow body with red or orange stripes on its abdomen, making it easily recognizable.
Easy, a yellow hair-legged spider.
It is called the black widow spider (Referred to as the black widow), it is a spider with a strong neurotoxin. With respect to the body size, they have longer legs and smaller abdomen. They are usually dark brown, has yellow stripes, and a yellow hourglass spot.
The spider you are referring to is likely the yellow sac spider. Yellow sac spiders are brown with two yellow stripes on their back and are commonly found in California. They are not considered aggressive towards humans but can deliver a painful bite if provoked.
It is possible that you are describing a Marbled Orbweaver spider, which is black with yellow or white markings. This spider can be found in North America and is not harmful to humans. It is important to observe from a safe distance.
Banana spider
I believe this spider friend of yours is a jumping spider, although there are lots of other spiders out there who are yellow, grey, black, orange and brown.
This is most likely a common garden spider. They typically are described as black and yellow, but the yellow markings can appear orange at times.
A brown spider with a yellow stripe on its head is a wolf spider. The wolf spider may sometimes have an orange stripe on their head also.
Argiope aurantia is a black spider with yellow stripes. Its common names join such different physical descriptions as black and yellow garden spider, corn spider, writing spider, and zipper spider. The black and yellow garden spider generally may be considered harmless to humans.