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Hello,
Maybe someone can tell me what species this is? I found them both in the garden today mating on a dandelion blossom.
Kind regards, Volkmar


Find data: Germany, North Rhine-Westphalia, D-59821 Arnsberg, 235 m, 27.4.2025.

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I think it's not Osmia cornuta ?

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I think it's Osmia bicornis: female with black last tergites and cornuta's male abldomen is red.

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I'm not entirely sure about bicornis, maybe it's cornuta after all, I see two little horns on the female's head, what do you think?
The male's abdomen isn't red enough for me, and doesn't necessarily look faded either.

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Here's another picture