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Photo#41792
Yellow Sac Spider? - Cheiracanthium

Yellow Sac Spider? - Cheiracanthium
Salt Lake City, Salt Lake County, Utah, USA
November 5, 2005
I believe this is a Yellow Sac Spider because of the unusually long front legs. I took this picture at night so it's not very clear. Does anyone know for sure if it's a sac spider?

Very common in Utah
That does look like a yellow sac spider.
Here in Provo, Utah, these are easily the most common house spiders, those and Wolf spiders. I have been bitten by spiders many times in my sleep and never had more than a kind of painful bite, like a week or two to go away completely. Since this is almost the only spider I've ever seen inside I would imaging I've been bit by it.
I probably see 10 of these for every Wolf spider. Very very common.

Yellow Sac Spider ID
Thanks to those who helped confirm the yellow sac spider. I hope I never have to worry about the bite.

RE: Yellow Sac Spider
I have seen many of these around my house and was hoping they weren't the yellow sac spider. But when I took this close-up that showed the long legs, I had a pretty good idea what it was. I also read that the bite isn't quite as bad as originally thought. Has anyone on this site been bit by one?

 
yellow sac spider bite
We have had a problem recently with bites. After some research, i discovered that yellow sac spiders are rather common in utah, are out at night, and usually mostly in the fall. When i started to research the bites, I discovered that they fit the ones I, and my brother-in-law have. They start out similar to a mosquito bite, but cause intense pain for about four hours. It was more of an annoying stinging to me, but my brother-in-law was in so much pain he had to go to the emergency room (where they had no idea what had caused these bites)after a day or two, they grow larger, and numb the surrounding area (the venom kills the surrounding cells, like a brown recluse's, but less serious) and it usually blisters. below is a picture of the most recent bite, notice the reddish area under the skin surrounding the bite, that is completely numb.
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My guess
is you have the genus right. Did you see the guide page here?

yes
This is a yellow sac spider. I've come into contact with many in natural habitats, and have never had one show aggression. I'm sure since you ID'ed this, you know of these spiders. They can sometimes cause nasty wounds.

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