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1171 Views 5 Replies Last post: Oct 25, 2013 1:03 PM by lukephilipg RSS
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Oct 25, 2013 10:18 AM

Spider Indentification....Please help!!!

Can any body help with identifying this little fella?

There are 20 plus around my window frames....


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Many thanks if you can help

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    Oct 25, 2013 11:05 AM (in response to lukephilipg)
    Re: Spider Indentification....Please help!!!

    This is a missing sector orb weaver (most likely Zygiella x-notata), a harmless spider often found inside & out of our homes. I should think most people have some on their window frames, you often get several around the same pane.


    Regards, Mark.

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      • Currently Being Moderated
        Oct 25, 2013 1:02 PM (in response to lukephilipg)
        Re: Spider Indentification....Please help!!!

        Zygiella's markings might be seen as more of a "feather", "flare" or "chevrons". They have stripey legs even when mature. Their heads are typically brown, with a thick, dark, central stripe and a fine dark line around each side. Their webs are the typical orb web that hangs vertically and in the evenings the spiders hang vertically in the web.


        Steatoda nobilis' markings are more usually described as a "skull", "shield", or even a pentangle...perhaps like a monopoly house? As they grow, females can lose the lower part of the marking and it look more like a "USB"'s a female S nobilis...



        ...this is a young one, notice there is some striping around the legs still, the head is a more uniform colour, you can't see so easily from this photo, but she is hanging horizontally under her web, belly up.


        Here she is again a few months on...legs are more of a solid colour now, still hanging belly up. Markings are stretched & faded....



        She is still in the same place & hasn't moved more than 6" in any direction. Her web is messy and more like a hammock/shelf. She bolts for cover whenever she feels threatened.


        Both Zygiella and S nobilis are very variable in colour. Zygiella often live in very close proximity of each other. S nobilis less so, there is a spiderling about a yard away, I haven't seen any other females indoors. Males come & go, she doesn't seem to mind the much smaller Zygiellas living close by...occasionally chases them off. I would be surprised to see 4 or 5 S. nobilis on the same window pane.


        There are other false widow species in the UK, but S nobilis is the one that grabs the headlines & the one most likely to be confused for a Zygiella species.

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