Narrow-headed Marsh Fly

Helophilus fasciatus

Narrow-headed Marsh Fly (Helophilus fasciatus)
Image: Wikipedia / Wikimedia Commons, CC BY-SA, wikipedia

Helophilus fasciatus, the narrow-headed marsh fly, is an abundant species of syrphid fly observed throughout the United States and Canada. Hoverflies can remain nearly motionless in flight. The adults are also known as flower flies for they are commonly found on flowers, from which they get both energy-giving nectar and protein-rich pollen. The larvae of this genus are associated with wet decaying organic material, particularly accumulations of decaying vegetation in ponds and mud and farmyard manure or silage. The adults of this species lays eggs on vegetation overhanging the water. The larvae hatch and drop into the water. Source

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In the last 8 weeks this insect was recorded 70 times across 12 areas (each area is a 5 degree square).

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Related species

Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.