Eristalis flower flyThis flower fly is in the genus Eristalis. Adult flies in this genus look like honey bees. They are common on flowers. The larva is also called the rat-tailed maggot because it is aquatic and breathes through a long, snorkel-like tube. 

Order: Diptera
Family: Syrphidae
Species: Eristalis sp. (probably arbustorum)

Photograph: © 2009 RKD Peterson
Date of Photograph: 4 September 2009
Location: Montana, Gallatin Co. (45o43'41" N 111o08'11" W)