Helophilus
Guides
Helophilus intentus
Yellow-legged Marsh Fly
Helophilus intentus is a species of syrphid fly (flower fly) in the family Syrphidae. It belongs to the genus Helophilus, whose members are commonly known as marsh flies due to their association with aquatic habitats. The larvae develop in decaying plant matter submerged in water. Adults are sun-loving and frequently observed visiting flowers for nectar and pollen.
Helophilus lapponicus
Yellow-margined Marsh Fly
Helophilus lapponicus is a Holarctic species of hoverfly found across northern North America, northern Europe, Greenland, and Siberia. Adults are medium-sized syrphid flies, 12.5–13.5 mm in length, commonly observed visiting flowers for nectar and pollen. The species is distinguished by yellow abdominal markings and specific wing venation. Larval biology remains undocumented, though congeneric species develop in wet decaying organic matter.