Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Photo#41834
Dwarf Spider - a tiny red and black spider - Ceraticelus

Dwarf Spider - a tiny red and black spider - Ceraticelus
Fort Bragg, Cumberland County, North Carolina, USA
January 29, 2006
Size: about 4 mm
Besides the blacker legs this one also has a small black spot on its rear that the other does not have.

Images of this individual: tag all
Dwarf Spiders - Ceraticelus Dwarf Spider - Ceraticelus Dwarf Spider - a tiny red and black spider - Ceraticelus

How dangerous / poisonous are these spiders?
I'm pretty sure we found one of these in our house recently. Concerned because our baby was bit by something recently, just don't know if it was this spider. The swelling has gone down a lot though.

Do you know how dangerous a bite from one of these would be? Assuming I have the right spider.

https://lh6.googleusercontent.com/-_tZWRZNXgBg/VSxjLlOqyKI/AAAAAAAAGGY/tVJamLqnjNI/w1207-h905-no/d82b764f800a21e6751dce1da31d3551809d209d05f84f1d6fb8005b151b8b8f.jpg

https://lh6.googleusercontent.com/-XIxVrxOXuUI/VSxjUS9OGSI/AAAAAAAAGGg/xqX-ma00d20/w1207-h905-no/9efecb91eff7783da66f025ba4ee5f5ff4d03ce6e4772ec22b4ac4e39496735e.jpg

 
Yes
I think your ID is right or at least close. Don't worry about these spiders. They are not of medical significance and the chance of being bitten by a spider is so small that it's almost not worth considering as the source of your child's skin issue.

You didn't mention your location. I can give you a list of spiders to watch for if you tell me where you are. But in general you need to watch for the brown recluse and the widow spiders. Familiarize yourself with those spiders and then you don't need to worry about the other ones.

If you do find spiders inside just scoop them up and throw them outdoors. Remember that spiders protect us from more harmful insects like mosquitoes!

Found One!
I found one of these today in Tampa Florida, a very tiny spider. It too had the black spot separate from the spinneret.

Moved
Moved from Florinda coccinea.

Black Spot
In this image the other one has the spot- it's just not as dark.

 
Not quite
It looks that way from these images, but the "spot" on the smaller one is the actual spinneret, whereas the spot on the larger one is a distinct spot above and separate from the spinneret.