Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes


TaxonomyBrowseInfoImagesLinksBooksData
Photo#353799
Brown recluse ? - Steatoda grossa

Brown recluse ? - Steatoda grossa
Manteca , California, San Joaquin County, California, USA
November 21, 2009
Size: 1/2"
I am finding 2 of these spiders a day in my house . I am pretty sure it is one of the bad spiders but would appreciate confirmation from the experts . Thanks , sincerely Beth

Out in Manteca,
the only dangerous spider I know of is Latrodectus hesperus.

Moved
Moved from ID Request.

Looks like
a male Steatoda (probably grossa), not even close to bad.
How far are you from a Brown Recluse?

 
Yep, this is a male Steatoda grossa
These are wonderful spiders to have in your home (they live outdoors as well). They prey on other bigger spiders and annoying bugs. They are strictly nocturnal and it's not very common to see them during daylight hours. Their web may be hidden right under your nose but you won't know that until the sun goes down and they emerge from hiding. If you are finding these roaming males, it's just because they are looking for females to mate with. They are extremely timid and fearful of humans. Their common name is the False Black Widow because the females can resemble a Black Widow spider. The bite of the false widow is supposedly a little painful, like a wasp sting, and it can sometimes make you nauseous for a few days...but honestly, people don't really ever get bitten. I've even tried to provoke a bite from my hand reared Steatoda grossa, to no avail. So this species is truly a household friend in my opinion...but if you feel like relocating the ones you find, that is fine. There are some tips on how to do that towards the bottom of this page. And you can also check out other photos of this species here. I hope that helps...and if you have any questions, please ask. :)

 
False Black widow / male
Thank you so much for your in depth comment about my concern to the spider I found in my house Mandy . Now I can identify them by name and relocate them outside where they can enjoy a better life . I have a favorite spider whom is a funnel-web spider who I let stay on the bathroom windowsill because she really does a fine job of capturing flies that come inside . Thanks again for the important information , sincerely Beth

 
No problem :)
This species is actually one of my favorites at the moment, so I love to talk about them whenever I get the chance. :)

 
reference pic
Here's a nice matching closeup.


Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.