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Yellow Sac Spider

Posted by December 18th, 2009 at 9:42 am

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Sac Spiders

What kind of spider is this?
December 17, 2009
I keep finding these little spiders in my house, specifically in my bathroom. They seem to like to be on the ceiling above the shower and I always freak out when I see one while I’m in there because I don’t know what kind of spider it is and whether or not they are of any danger to me. They are usually about the size of a nickel and very pale in color. Can you tell me what kind of spider this is and a little bit about it please?
Jessica
Providence RI

yellow sac spider jessica 244x300 Yellow Sac Spider

Yellow Sac Spider

Dear Jessica,
This species that has been introduced from the Mediterranean, Cheiracanthium mildei, is known by several common names, including Yellow Sac Spider, Black Footed Spider, and Cream House Spider.  The spider will bite, most often when it is trapped in clothing.  It was once believed that the bite of the Yellow Sac Spider was associated with blisters and lesions, but this has not proven to be the case, and the species should be removed from the medical concern list according to BugGuide.  You may read more on the ASTMH website of the American Journal of Tropical Medicine and Hygiene.

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Comments 1

  1. soybeck wrote:

    I have been bitten many times by these spiders, and each time I react horribly, with blisters, cellulitis, and horrid itching. However, everyone else in my cirlce of knowledge has never reacted that way to any spider bite, and I am sure they have been bitten by these common spiders. Probably I am simply allergic to them I suppose.

    Posted 22 Dec 2009 at 12:06 am

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