On the 28th August I had a photo of this species up Gilfach (west) near the car park. In fact there were four or five dotted around. It is a parasitic wasp (Ichneumon) that lays its eggs on sawfly larva particularly those on the flower Golden-rod. Looking at the NBN Atlas and the I record maps there doesn't seem to be any records for Wales let alone Glamorgan and very few records for the UK (20 records) so of course its new for the valley . I'm not very good at identifying Ichneumons, so I had it confirmed on I record before posting.
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