Thanks to Jacek Wendzonka "brachytron" (Poland) for genus ID.
On the flower of Buddleja davidii.
Bumblebee on Autumn Sage
In Jardinière rooftop garden
A bumblebee is any member of the bee genus Bombus, in the family Apidae. There are over 250 known species, existing primarily in the Northern Hemisphere although they also occur in South America. They have been introduced to New Zealand and the Australian state of Tasmania.