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481 Views 2 Replies Last post: Feb 1, 2013 8:49 PM by MikeHardman RSS
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Feb 1, 2013 3:55 PM

Seen in Norfolk

My son sent me this picture of a creature seen on his front door in August 2009. He lives in Barroway Drove, PE38. Norfolk. Can anyone identify it?

Thanks, Barry.

 

100_4580_2.jpg

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    Feb 1, 2013 5:57 PM (in response to Barrybloke)
    Re: Seen in Norfolk
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      Feb 1, 2013 8:49 PM (in response to Bird Wocha)
      Re: Seen in Norfolk

      Yes.

      It is a ladybird mimic.

      Mention is made of mimicry quite often here, eg. http://www.nhm.ac.uk/natureplus/message/26401#26401

      It is a fascinating subject, not just in terms of spotting mimics, but all the questions mimicry raises - If 'x' has come to mimc 'y', what did it look like originally?, Where are the intermediate forms between x and y?, The presence of today's good mimics implies the intermediate forms must have survived, so why didn't the predators pick them off?  And if they were good enough to survive predation, why did x continue converging on the appearance of y?, It may be advantageous for x to evolve rapidly to look like y, but does that risk males and females of x not being able to find one another (or does that hint at optical apperance not being key to mate-finding?), Do visual mimcs retain the pheromones of their original forms?  Some of those questions are more easily answered or argued, but such questioning can still be worthwhile for the further issues they may raise.

      It's all good stuff!

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