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Entomology (Study of Bugs)/Please help me identify these spiders

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Glue trap
Glue trap  

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Close up.  
Hi, for the past two weeks I've been finding these spiders all over my house and I can't seem to find anything similar to it online. I've either found them alive or dead. I have a child and a dog running around and I'm scared they are going to get bit. I  haven't  been able to get a picture of a live one but here is some from a glue trap I set.

Answer
Tania:

You have at least three different spiders on the trap, two large and one small....

The one in the upper right corner is a male False Black Widow, Steatoda grossa .  Here's more about it:

http://www.spiders.us/species/steatoda-grossa/

I cannot tell what the others are, but they are certainly *not* anything I recognize as dangerously venomous to the average, healthy human or pet.  I don't believe you have cause for alarm.

Hope this puts your mind at ease a bit.

Sincerely,

Eric

Entomology (Study of Bugs)

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Eric R. Eaton

Expertise

I answer insect and spider identification questions ONLY. Attach images if possible. No "what bit me?", "what do I feed this bug in captivity?", or science fair project questions please. NO TECHNICAL QUESTIONS ABOUT INSECT PHYSIOLOGY.

Experience

Principal author, Kaufman Field Guide to Insects of North America. Professional entomologist employed previously at University of Massachusetts, Chase Studio, Inc., and Cincinnati Zoo; contract work for West Virginia Department of Natural Resources, Smithsonian Institution, and Portland (Oregon) State University.

Publications
Author, Kaufman Field Guide to Insects of North America, Missouri Conservationist magazine, Ranger Rick, Birds & Blooms, Timeline (journal of the Ohio Historical Society). I have contributed to several books as well.

Education/Credentials
Oregon State University, undergraduate major in entomology, did not receive degree.

Awards and Honors
One of the top 50 experts in all categories for AllExperts.com, 2009.

Past/Present Clients
Principal author of the Kaufman Field Guide to Insects of North America, Smithsonian Institution (contract), Cincinnati Zoo (employer), Portland State University (contract), Chase Studio, Inc (employer), Arkansas Museum of Discovery (guest speaker). Currently seeking speaking engagements, leadership roles at nature festivals, workshops, and ecotours.

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