I don't know the name of this insect, but I call him The Bumbler.
He loves the nectar my flowers produce. But whereas the pretty butterflies, bees and hover flies, daintily hover, land and collect the nectar, The Bumbler does just what his nickname suggests.
He blunders around amongst the flowers. Then he lands as heavily as a probationary co-pilot.
The flower bends right over under his weight, so he has to hang on upside down. Then the flower bounces back up as he does his ungainly take off. He is very comical to watch.
I notice however, that he cheats with the Nicotiana sylvestris.
He lands on the back of the open flower, then walks up to the top where he pierces the flower to get at the nectar that way.
Here he is on a flower that at least, can bear his weight.
Daisy