The same female, see here, now on Trailing bellflower (Campanula poscharskyana).

References
1 Nederlands SoortenregisterMegachile willughbiella (Willughby's Leaf-cutter Bee)
Campanula poscharskyana (Trailing bellflower)LOCATION: Krimpen aan den IJssel, garden
OBSERVATION:
2020-VI-20
The same female, see here, now on Trailing bellflower (Campanula poscharskyana).
References
1 Nederlands Soortenregister