White-bowed Smoothwing

Scaeva affinis

White-bowed Smoothwing (Scaeva affinis)
Image: Wikipedia / Wikimedia Commons, CC BY-SA, wikipedia

Scaeva affinis, commonly known as the white-bowed smoothwing, is a species of hoverfly found in western North America. The larval form feeds voraciously on aphids. Scaeva affinis is the only Scaeva likely to be encountered in the Nearctic realm, where it is common in the west and rare in the east. This species is believed to be migratory. In 1823, Thomas Say originally described it as "tergum black with three yellow lunules on each side...inhabits Arkansa." S. affinis was later combined with Scaeva pyrastri. Source

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In the last 8 weeks this insect was recorded 10 times across 1 area (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.