Hi Alison See : https://www.cabi.org/isc/datasheet/109215 A quote from that page: Females yellow-flower wasps (Radumeris tasmaniensis) are about 30 mm long with a 40 mm wingspan and have a large robust body with a broad abdomen. So this one can't be Radumeris tasmaniensis as you confirmed. I will have to undo.
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