A Hoverfly (Flower Fly) on a White Rose
Believed to be a flower fly (or sometimes called a Hoverfly or Syrphid fly. It's orange and black markings resemble a honey bee.
It belongs to the family of Syrphidae and the Genus of Copestylum. The markings the help the fly mimic a bee help to ward off predators.
This one was sitting on a white rose collecting pollen. Some of these flies are good to have around the garden as they feed on aphids and can be important pollinators.
Photograph taken at the Julia Davis Rose Garden in Boise, Idaho.