Sighting

amanda 17 Jan 2017

Identify please : These holes have been filled in my native bee habitat. Can anyone help identify what's living in there?

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Sighted 16 Jan 2017
Canberra ACT 2601, Australia

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Identifications

  • Ken Walker 6 March 2017
    Isodontia
    (genus)
    Taxonomy: Animalia: Arthropoda: Insecta: Hymenoptera: Sphecidae: Isodontia
    Ken Walker says

    This is the grass-wasp that has filled these holes with grass.

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Notes

  • Karen Retra 27 January 2017
    Tagged With and wasps?
    Karen Retra says

    A likely 'suspect' for the grass-filled holes would be a Sphex wasp. Here are some lovely examples of their work: http://www.bowerbird.org.au/observations/28109.

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  • Ken Walker 24 January 2017
    Tagged With bees
    Ken Walker says

    Hi Amanda -- The most likely bees to fill in these holes are Megachilidae bees. They come in two forms - Resin and Leaf cutter bees. Obviously, the leaf cutter bees use pieces of leaf to block the entrance of the hole while resin bees either use plant resin or chew leaf material to block the hole entrance.

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  • Ken Walker 27 January 2017
    Tagged With grass
    Ken Walker says

    As well as Sphex, wasps of the genus Isodontia (very much like Sphex) also close off their nest cells with grass stems.

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  • Karen Retra 27 January 2017
    Tagged With cool!
    Karen Retra says

    Thanks Ken!

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