A Year in the Valley

A Year in the Valley

Discovering the flora and fauna in a small square of Portmellon Valley

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  • Giant Willow Aphid (Tuberolachnus salignus)

    Giant Willow Aphid (Tuberolachnus salignus)

    This little fellow kept climbing over to the other side of the leaf, whenever I tried to take his photo, but eventually I succeeded.

    I had no idea he was an aphid – I was guessing weevil because of his size.  But it’s not a misnomer – at up to 6mm long he is indeed a giant aphid, the largest variety in the UK.

    Appearing steely-grey with black spots, I found out that these aphids are actually dark brown but look grey because of a white dust that forms on them.  The other defining feature is a shark-style protuberance on its back.  This shows up better in the image on the right. 

    Like all aphids they live in colonies feeding on the sap of the white willow, common sallow and also quince, apple, and poplar trees.  They then excrete the honeydew so beloved of the wasps.  So, we have seen a little cycle of life played out in our willow tree!  What a neat piece of synchronicity!

    Daisy D

    20 September 2023
    Insects
    Common Wasp, German Wasp, Giant Willow Aphid

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  • October 2024
  • September 2024
  • August 2024
  • July 2024
  • June 2024
  • May 2024
  • April 2024
  • March 2024
  • February 2024
  • January 2024
  • December 2023
  • November 2023
  • October 2023
  • September 2023
  • August 2023
  • July 2023
  • June 2023
  • Spotted in September
  • Spotted in August
  • Spotted in July
  • Spotted in June
  • Conclusions