First, you would not be able to see fang marks from a spider, save for very large spiders, and then only briefly.

Spiders are not the biters people believe, and if you have to 'think' you were bitten by a spider, likely your injury has another source.

As Elias points out, there are a number of skin conditions that can mimic bites, and possibly the 'holes' you see are infected pores.

For the most part, a common spider bite is little different than an ant sting or mild bee sting.

Unless you are constantly handling spiders, you may never get bitten by one.

http://news.yahoo.com/surprising-cause-most-spider...

Check this out:

http://www.youtube.com/watch?v=34XIiXmSq6I

"Spider bites" usually turn out to be some sort of skin infection like staph. Of all the "spider bites" I saw come into the ER during my internship there none of them were diagnosed as spider bites. They were always something else. Spider bites just really aren't that common.