Platycheirus inversus explained

Platycheirus inversus, also known as the knobfoot sedgesitter, is a rare species of syrphid fly observed in Northeastern North America. 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. Larvae are aphid predators.^{[1] [2] [3]}

Notes and References

1. Book: Skevington, Jeffrey H . 2019 . Field Guide to the Flower Flies of Northeastern North America. . 9780691189406 .
2. Young . Andrew D . 2012 . A revision of the Nearctic species of Platycheirus Lepeletier and Serville (Diptera: Syrphidae) . Master of Science . University of Guelph . 2012-05-09 .
3. Rotheray . G.E. . 1993 . Colour Guide to Hoverfly Larvae (Diptera, Syrphidae) in Britain and Europe . Diperists Digest . 9 . 155 .