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3441 Views 6 Replies Last post: Nov 18, 2013 3:29 PM by rhossilian RSS
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Aug 23, 2010 9:51 PM

Crab ID

Found on the beach on the Cumbrian coast, is this a Shore Crab, Carcinus maenas? It was about 20mm across the carapace.

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    Aug 27, 2010 4:18 PM (in response to Graeme Castles)
    Re: Crab ID

    Unfortunatly my computer will only show half of the picture.  From the look of the hind legs the flattened segment suggests a member of the Portunidae or swimming crabs.  They have long delicate chelae and from experience can give a pinful nip.

    I hope this helps.

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      • Currently Being Moderated
        Sep 2, 2010 6:05 PM (in response to Graeme Castles)
        Re: Crab ID

        Hi Graeme

        Thats better.  There are two swimming crabs that come to mind the sandy (Liocarcinus depurator) and the marbled. (Macropipus marmorata)  Sadly I dont have the books I used when I was in Fisheries so I can't be positive.  If I remember correctly it is a case of counting and measuring the indentations on the front of the carapace.

        Hope that is a bit nearer.  Any book on shore creatures should have both species in.

        good luck

        Tony

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