Something is poisonous if it makes you sick when you eat it. Something is venomous if it makes you sick when it stings you or injects venom through a fang.
Almost all Spiders have one kind of venom or another. Almost no spiders have enough venom to kill a healthy adult human, however, there are lots of spiders that have enough venom to make you hurt for a while. There are only two main kinds of spiders that you really have to worry about (particularly if you have kids) in the U.S. They are:
•Black widow spiders
•Brown recluse spiders
Neither one of these spiders fits the description you give.
A garden cross spider, Araneus diadematus. Source: Google search for spider cross back
Have seen a very small spider with 4 white dots and 1 red dot. Not a red back. Ta ~Snaff
Araneus diadematus(AKA cross spider) is the only spider i can think of that i know of that is brown/black and has a cross on its back. Here are some photos. http://www.nicksspiders.com/nicksspiders/araneusdiadematus.htm
The answer is a brown camel spider.
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.
Yes, These Spiders Are Very Poisoness. But These Arent The Ones You Should Worry About. It's The Red Back Spider. Usually Mistaken For The Black Window.
The spider with a big brown ball on its back is likely a species of orb-weaver spider.
The distinguishing features of a brown spider with white spots on its back are its brown coloration and the presence of white spots on its back.
a spider known as a cross spider usaually found in the uk
your mummy spider
An Arrowhead spider is brown with a green back. This spider is also known as a Triangle Orb Weaver. This spider is not venomous.
A spider with a brown oval mark on its back could potentially be a brown widow spider. Brown widows are related to black widows but have characteristic brown markings on their abdomens. It's always best to consult with an expert or use caution when identifying spiders to avoid potential harm.