Steatoda borealis

Picture ID 58783

Picture of Steatoda borealis - Lateral

Comments & ID Thoughts

Curls into a ball when touched. Very shiny black but no red underneath. Spun a web in the jar.

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  • Submitted: Apr 30, 2019
  • Photographed: May 1, 2019
  • Spider: Steatoda borealis
  • Location: Venise-en-Québec , Quebec, Canada
  • Spotted Indoors: Basement or Cellar
  • Found in web?: No
  • Attributes: Lateral
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ItsyBitsySpidersnart Recent comment authors
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I think this a Steatoda Grossa (black faulse widow) however without seeing its abdomen (if it has a red marking shaped like an hourglass, it’s a true black widow) either way, it may carry harmful venom… here is an article I found on line: *Medical Importance False black widows produce symptoms that are similar to but much less severe than those of a true black widow bite. There are documented cases of Steatoda bites leading to blistering at the site of the bite and a general malaise lasting for several days. Additionally, symptoms can include moderate to severe pain increasing… Read more »


Steatoda borealis, False Widow

Additional Pictures

Picture of Steatoda borealis - Ventral Enlarge Picture
Picture of Steatoda borealis - Dorsal Enlarge Picture
Picture of Steatoda borealis - Female - Ventral Enlarge Picture
Picture of Steatoda borealis - Male - Dorsal Enlarge Picture