Steatoda nobilis
(Noble False Widow)

Picture ID 193968

Picture of Steatoda nobilis (Noble False Widow)

Comments & ID Thoughts

I think this is a false black widow.
Found inside door recess in glasshouse, living in door keyhole

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0959kedi

Steatoda paykulliana or Steatoda bipunctata.

TangledWeb

You know Steatoda well. Could this be S. parkulliana because there are faint lines on the sides?

0959kedi

Most likely S. paykulliana but I don’t have much knowledge about S. bipunctata so I’m not sure.

Looks like S. bipunctata has more light brown abdomen and has a marking on abdomen.
S. bipunctata pics:
https://araneae.nmbe.ch/gallery/photos/73
https://www.inaturalist.org/taxa/146685-Steatoda-bipunctata/browse_photos

Nod

I am pretty sure this is Steatoda nobilis. It looks to me to have a washed out version of this pattern..https://www.museum.ie/en-IE/Collections-Research/Registration-Department/Registration-Blog/The-Widows-Arrival. They loose their pattern with each successive molt.

0959kedi

I commented but it says “Awaiting for approval” so I’m commenting again:

Picture you sent shows an adult S. nobilis. Yes, some specimens can be found with less white patterns(For example: https://www.inaturalist.org/observations/130526388) but most of their abdomen is still white and abdomen’s sides are white.

S. paykulliana females with white patterns looks a lot more matching.

Last edited 2 months ago by 0959kedi
TangledWeb

Steatoda have their markings as indentations in their chitin. I see the shape of the markings of S. nobilis indented into this spider. That is why I chose that as the identification.

0959kedi

Thanks for the ID!

Also, people on iNat confirmed my S. paykulliana female observation was an adult female. Can you ID my picture?

TangledWeb

Yes, I am happy to do it

0959kedi

Thanks!

Additional Pictures

Picture of Steatoda nobilis (Noble False Widow) - Webs Enlarge Picture
Picture of Steatoda nobilis (Noble False Widow) Enlarge Picture
Picture of Steatoda nobilis (Noble False Widow) Enlarge Picture
Picture of Steatoda nobilis (Noble False Widow) Enlarge Picture