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This is not M punctata as punctata has dark antennae.

M aurifrons is similar to M germari (missing on your list) and very different from your specimen.

You are missing another species on your list: Miltogramma rutilans

and I am convinced that your specimen is indeed M rutilans. Tolra nor Fauna Europaea mention that species from Spain. But I have it from Spain myself.

Liekele