Another name for the Snowberry Clearwing Moth (Hemaris diffinis) is Bumblebee Moth. Snowberry Clearwings are in the same family as Hummingbird Clearwing Moths (Hemaris thysbe). Snowberry Moths have yellow and black colors similar to Bumblebees while Hummingbird Clearwings, which are reddish brown and green, look more like Ruby-throated Hummingbirds.
If you would like to attract clearwing moths to your garden, plant plenty of nectar-rich flowers that bloom in July especially. And even more importantly, plant the caterpillar food plants. The females deposit their eggs on honeysuckles, viburnums, blueberries, snowberry, and members of the rose family.
Another way to help clearwing moths is to NOT tidy up your garden in the fall. As is the case with so many species of Lepidoptera, and other insects, they overwinter in the leaf litter at the base of plants. Snowberry Clearwing Moths emerge in late spring and early summer from cocoons hidden in leaves.