Last summer I took these pictures of a member of the Syrphidae on my balcony (Switzerland, Geneva area, Alt. ~380m, June 2020 @19:14)
Pictures:
I hesitate between three species but it could also be another one:
- Scaeva dignota
- Scaeva selenitica
- Scaeva pyrastri
Because the pale marks on tergites 3 and 4 seems parallel to the anterior margins of the tergites, I would eliminate the third one, especially because the marks are also more yellowish than white. For the two other species, I am not sure because I checked many pictures on the internet, but some are wrongly tagged (google images results).
Any entomologist can confirm the exact species of this hoverfly?