Yesterday I saw a bee’s behind (a bee-hind?) sticking out from under the edge of a common mullein leaf (Verbascum thapsus, Scrophulariaceae). I thought this bumble bee (Bombus sp., Apidae) seemed shy, but it was probably just engrossed in some activity on the underside of the leaf. What that activity was, I don’t know. Normally they spend their time with their faces buried in flowers eating nectar and collecting pollen, not playing around on leaves. I’ve heard that they sometimes lick up honeydew left by aphids (Aphididae), and perhaps that was what this bee was doing.
It eventually stopped what it was doing and turned around long enough for me to get a decent shot of its face. Then it buzzed away.