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Hi

I found today this fly in a dry wasteland. I think it is a Tephritis, but I'm not sure of the species. I mainly hesitate between T. neesii and T. separata, but T. divisa is close too. What are the best criteria to identify these species ?

I don't know the host plant but it is possible that both Leucanthemum and Picris are present.

Found in Bobigny, Seine-Saint-Denis, Île-de-France, France
20th of July 2020
size : around 5 mm