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1695 Views 4 Replies Last post: Feb 7, 2012 5:07 PM by Drosophila RSS
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Feb 3, 2012 10:20 AM

Spider found in throw

This spider crawled out of a throw on my settee!  I don't remember seeing anything quite like it before.  In shape it is rather like pictures of a Black Widow, but with no red.  Body (cephalothorax and abdomen ) is about .8-1cm in length.  Against the throw the picture looks as if it's brown but was more of a glossy black.  In some of the pictures it's in a blue plastic box that I put it in.  I was going to put it outside, but it is Sooo cold today and it scrunched itself up and became very still as soon as it felt the cold air.


Any ID?  What's the best kind of place to put it so that it can keep out of my way and mind its own business till the spring?  The box has airholes and I put a piece of cloth for it to hide in, but don't really want it as a pet!   Also it would starve unless I get it something to eat.


Pictures aren't too good, but the best my camera will do.  I assume it's a female as its abdomen was comparatively large and very rounded.

  • Currently Being Moderated
    Feb 3, 2012 10:46 AM (in response to Drosophila)
    Re: Spider found in throw

    It will almost certainly be Steatoda grossa - the most Widow like of the False Widow spiders (Steatoda). I say almost as it is not possible to confirm form these images - the extremely outlying possibility is that it is a true Black Widow (Latrodectus sp.) but we will need focused images to determine.


    Most likely Steatoda grossa (from jiz and general likelihood) - 98%


    Slight chance that it is a more sinister Latrodectus sp. - 2% 

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