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Thank you, Theo. I agree about the light. I think that the wing veins are much darker than my photo. I remember seeing it in natural light and it looked much darker and stronger. I will change the title.

I now understand that the reddish apex of the tibia eliminates ferruginatus. I have no keys but i found an old post here at diptera.info where you descrive ferruginatus. I now see that reticulatus is a prefect fit. Thank you very much.