Robin's pincushion

Discussion in 'Nature' started by pdh, Jan 28, 2014.

  1. pdh

    pdh SC Legend

    Jan 2, 2011
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  2. ReD

    ReD SC Hall of Famer

    Mar 27, 2013
  3. christilou

    christilou SC Hall of Famer

    Jul 13, 2010
    Sunny Frimley
    Well that's interesting, never heard of them !
     
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  4. pdh

    pdh SC Legend

    Jan 2, 2011
    Why the puzzlement?
     
  5. BillN

    BillN SC Hall of Famer

    Aug 25, 2010
    S W France
    Bill
    Polly, you will have to explain this one

    Wiki is you friend

    The rose bedeguar gall, Robin's pincushion gall, or moss gall develops as a chemically induced distortion of an unopened leaf axillary or terminal buds, mostly on field rose (Rosa arvensis) or dog rose (Rosa canina) shrubs, caused by the parthenogenetic hymenopteran gall wasp (Diplolepis rosae (Linnaeus, 1758)), previous synonyms are D. bedeguaris, Rhodites rosae or Cynips rosae.
    Diplolepis females lay up to 60 eggs within each leaf bud using their ovipositors. The asexual wasp emerges in spring; less than 1% are males.
    A similar gall is caused by Diplolepis mayri, but this is much less common.

    The CIA/NSA must have been at work!!


    Must turn the heating up - it's cold this morning
     
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  6. Boid

    Boid SC All-Pro

    Dec 15, 2011
    Bangalore, India
    Rajiv
    Miss Warmtone, your posts nearly always make me chortle with glee.
     
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  7. ajramirez

    ajramirez SC All-Pro

    Jul 9, 2010
    Caguas, Puerto Rico
    Antonio
    One learns something every day. Beautiful photo, Paul.
     
  8. pdh

    pdh SC Legend

    Jan 2, 2011
    I had been watching it since it was in its full "fruiting" stage (early Autumn last year), though I did not take a photograph of it then.

    This is a different specimen, from 2012, in its own glory:




    8122001136_edd5a05970_z.
    20121012-1-2 by _loupe, on Flickr

     
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  9. pdh

    pdh SC Legend

    Jan 2, 2011
    Unfortunately, they fall prey at this time of year to hedge-cutting, which is why I picked this one - it wouldn't have survived the next pass of the cutter, though somehow it had managed to survive the first.

    Here it is in its proper place on the verge a few weeks ago




    11469402655_20ff6a0374_z.


    b20131220-1 by _loupe, on Flickr


     
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  10. pdh

    pdh SC Legend

    Jan 2, 2011
    I imagine the reason it is called "pincushion" is for this final stage, when the gall has a firm, close texture (a little like the "Oasis" flower-arrangers use); I don't doubt in earlier times they were plucked from the hedgerows and actually used as pincushions, but I've never read anything to support my supposition.
     
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