Observed in September on chalk heathland. I have never seen one before and am not able to identify it.
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Thanks guys. It wasn't very big but about the size of a cabbage white caterpillar - I didn't see a tail horn. I had just taken this photo when the dog I was walking walked past and knocked it off and I couldn't find it again unfortunately!
hmmm not sure- the pictures of both those I have looked at don't seem quite right though I have seen a lot of sawflies in the area. It looked more purple than it does in the photo.
yes!! Tenthredo marginella I am sure now and I have certainly seen adults in the exact vicinity. Thanks- i spot is fantastic!
Lat/Lng: 50.79247, 0.18466
OS grid ref: TQ540014