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Thread: Woodwasps

  1. #1
    Join Date
    Nov 2004
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    Caithness
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    Default Woodwasps

    Whilst sawing some logs for the winter I've noticed that I've got an infestation of woodwasps or woodboring flies that lie developing 2-3" into the logs. Some are at the catepillar stage but some are fully developed. They have a black head, thorax but a rusty orange abdomen. I'm not sure of the exact species as the online guides just show beetles as the wood pests and not flies or wasps. The length of the body and wings are too elegant to be a wasp, more like a stubby damsel fly shape.

    The entry holes are approx 5-6mm wide and the caterpillars are 40-50mm long.

    Does anyone have an idea what exactly they could be? Thanks.
    Last edited by Rheghead; 20-Aug-15 at 22:52.
    God, grant me the serenity to accept the things I cannot change,
    Courage to change the things I can,
    And wisdom to know the difference.

  2. #2
    Join Date
    Nov 2004
    Location
    Caithness
    Posts
    12,824

    Default

    I think they are Greater Horntail Wasps. Nice insects.
    God, grant me the serenity to accept the things I cannot change,
    Courage to change the things I can,
    And wisdom to know the difference.

  3. #3

    Default

    Yes they will be Horntails. Fearsome looking but harmless. Quite tame - I have had one sitting on my hand.
    We have seen them lately when cutting trees - they seem to be attracted by freshly cut wood.

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