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Dasylabris is unique by a very small and narrow first gastral segment (= abdominal segment), in contrast to the large remaining gaster. D. maura was only an idea, because maura is the most common european Dasylabris, and I compared your photo with specimens in my collection. But there are some more species in Spain, and normally you need a full specimen and a good key for a true identification.
Mutillidae are difficult, and for the moment lack specialists. My specimens had been identified by the late Borge Petersen, and by Arkady Lelej in Vladivostok. I don't know specialists in Europe.

Regards, Christian