Steatoda triangulosa
(Triangulate Cobweb Spider)

Comments & ID Thoughts

We have plenty of house spiders, but none have the 4 distinct spots on the back. It was on the underside of a chair in our office (the room in the house with desks and computers). She made silk in attempts to escape, but I wanted to take a picture. I've let her go outside now, but I do have some more pictures.

• Submitted by: 
  
  nirbhao
• Submitted: Apr 30, 2019
• Photographed: Apr 30, 2019
• Spider: Steatoda triangulosa (Triangulate Cobweb Spider)
• Location: Detroit, Michigan, Michigan, United States
• Spotted Indoors: Other
• Found in web?: No
• Attributes: Dorsal