6 abdominal segments = ♀
Are you able to completely rule out Bembix nubilipennis? BOLD has not completed the species bin at this time, but they have this one record. (probably a female) OK, it's missing the black stripes on the femora and it has more yellow on the front shoulders of the thorax.
I can't find any reference images of Bembix troglodytes.

B.nubilipennis can be ruled out because this individual lacks the cloudy brown coloration on the wings that females of nubilipennis have.

I can't 100% rule out other possibilities-color pattern isn't usually reliable enough on its own to get an iron-clad ID in this genus, and the other characters that would be useful are hard to see without a specimen in hand-but B.troglodytes is the best match for what I can see in these images.

I appreciate the impossibility for a certain ID - I have seen the color variations which are substatial. I could use B. cf. troglodytes, but how reliable do you feel is the tentative ID? (I realize this is a subjective measure, but still...)