What is this Korean spider and is it poisonous?

Question

If you have ever been in the military and stationed in Korea, it seems that there is this one species of spider which spins webs all over base, have an average body size of a thumb, and are cannibalistic. They are bright yellow with long black blotches, and I have no idea what they are called either in Korean or in English. It seems more numerous than any other insect in Korea, but perhaps that is because they are so visible. Anyone know what it could be and if it is poisonous?

Here is a picture. It looks a little different than the one the first responder posted. (You might have to cut and paste the link together.)
http://www.photoleague.co.kr/template/gallery/pl_gallery_view.asp?CR=&Code=136241

Answer 1

There are three genera of spiders that it might be
judging from the picture - Argiope, Nephila, and
Cyrtophora. If the silk of the web was yellowish
this would indicate Nephila, which seems the most likely to me from the picture, also. In a book on
spiders of Japan there is an illustration of the
spsider Nephila clavata, which looks rather like
your illustration. As with almost all spiders, it has
venom, but the venom of most spiders has little
or no effect on a vertebate animal. I would expect
a bite from a Nephila would either have no effect
on a human or, perhaps, might be about like a bee
sting.

Answer 2

Did it look anything like this?

http://www.animalpicturesarchive.com/view.php?tid=2&did=33451

If so, it was probably an Argiope amoena, the Far Eastern black-and-yellow garden spider (not terribly imaginative, I know). It is closely related to the species known as the golden orb weaver in North America (Argiope aurantia).

It's called kogane-guma in Japanese, but I have no idea what the Korean name would be.

Like most spiders, these species do indeed have venom, however they are not aggressive, and extremely unlikely to bite unless harassed or injured.

Their venom is formulated to be effective against the flying insects it captures in its web, and does not function well against vertebrates at all. Unless you are allergic to the venom (extremely unlikely, but possible), a bite from one of these spiders would be no worse than a bee sting. The biggest danger would be infection from scratching the wound afterwards with dirty fingernails.

Answer 3

Nephila Clavata

Answer 4

is a araneus ventricosus poisonous I see the picture on line but no information it was in my car when that I just purchased

Answer 5

You probably mean "lethal" or "harmful to humans". All spiders have poison.