What's That Bug? does not endorse extermination

Subject: Daniel – Baby Orb Weavers?
Location: Hawthorne, CA
December 4, 2012 2:01 pm
Hi,
There are many, many, many of these little babies on the wheel barrow this morning. Are they orb weavers?
Signature: Thanks, Anna Carreon

Brown Widow Spiderlings

Hi Anna,
The appearance of these Spiderlings and their presence on a wheelbarrow caused us to speculate that they were hatchling Brown Widows.  This image from BugGuide confirmed that speculation.  BugGuide states:  “Found around buildings in tropical climates.(1) However, it is an introduced species and is the most human-adapted of the species occurring in the South Eastern US. Its webs may occur anywhere there is sufficient space to make one. It may be extremely abundant on houses and other man-made structures (e.g., barns, fences, guard rails, bridges). It reproduces frequently and disperses rapidly, making it nearly impossible to control.”  They are not as dangerous as the Black Widow, and BugGuide notes:  ” It is recognized that this particular species of widow is most likely not medically significant (not an immediate medical concern to those who are bitten). (Net Ref (4)) The brown widow produces clinical effects similar to that of the black widow but the typical symptoms and signs being milder and tending to be restricted to the bite site and surrounding tissues.”

Oh, my.  Thanks very much.  They’ve now dispersed, but I’ll be sure to keep an eye out for them!
As an aside, I just counted 16 Monarch caterpillars.
Anna

What's That Bug? does not endorse extermination
Location: California

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