Unidentified

Picture ID 135668

Picture of unidentified spider
  • Submitted by: 
    Williamjg
  • Submitted: Apr 3, 2021
  • Photographed: Apr 3, 2021
  • Spider: Unidentified
  • Location: Galway, Ireland
  • Spotted Indoors: Other
  • Found in web?: No
  • Attributes:
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LocalEntomologist

That looks more like a black widow to me, but I hadn’t seen many in real life so take that with a grain of salt. If you want to move her, you can just use the cup and paper to transfer her outside or in an area where she isn’t in the way. Good find!

Vonpaulus

Good advice πŸ™‚ This is a Steatoda Grossa actually, aFalse Black Widow.

LocalEntomologist

Thanks for correcting me! I didn’t notice the dents in the abdomen originally, which led me to believe it was a black widow.

Vonpaulus

You’re welcome. The typical dents are very faint indeed, but, honestly speaking, my ID was based more on the range than on the habitus. I instantly ruled out Latrodectus sp. because the only European representative of this genus only occurs in restricted areas of some Mediterranean countries. This is the guy I’m talking about: https://spiderid.com/spider/theridiidae/latrodectus/tredecimguttatus/ Its bite may be dangerous, but the good knews is you’ll never find it in houses:) As far as S. grossa is concerned, its bite is not considered medically significant. The same goes for the whole genus, there included S. nobilis, in spite of the… Read more Β»

Last edited 17 days ago by Vonpaulus
LocalEntomologist

Good to know. I don’t know much about spiders outside of North America, so I’m trying to learn more πŸ™‚

Vonpaulus

Same here: just say Europe instead of North America πŸ™‚ .
By the way, do you happen to know where I could get a complete checklist for Usa and Canada? Something like this:

https://araneae.nmbe.ch/biodiversity/countrylist

You might find it helpful when dealing with European spiders.

Last edited 17 days ago by Vonpaulus
LocalEntomologist

insectidentification.org has most american species of insects and spiders with their ranges, and bug guide does too if I remember correctly. You can also ask Tangled Webs, since they are in the US πŸ™‚

Last edited 17 days ago by LocalEntomologist
Vonpaulus

Thank you so much πŸ™‚

TangledWeb

Hello! https://wsc.nmbe.ch/ I’m not sure if this is the same source, the World Spider Catalog. I only search by the spider, then check the major ranges. Someone wonderful put all of it into Wikipedia. If you search ‘spiders of __’ There are lists online. For US and Canada BugGuide is the best resource for all arthropods. Our Site Moderator told me to use their data instead of ours. πŸ˜‰ It was a site that helped lead to the creation of this site.