We believe this fly is in this genus due to its lengthwise-striped thorax and transverse striped abdomen. The name Helophilus means “marsh lover,” which fits the location this individual was found, the Lee Metcalf National Wildlife Refuge. Larvae feed on submerged plant litter. Adult hover flies often feed on nectar and/or pollen…perhaps this one was getting ready to dig in.
Size: 10-15 mm
Photo by: Glenn Marangelo on 5/29/22 near Stevensville, MT