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March fly - Bibio sp.  Bibio xanthopus,Geotagged,Spring,United States Click/tap to enlarge Promoted

    comments (4)

  1. Lol, definitely weird. It looks like Bibio vestitus. In the east, I would have called it Bibio femoratus. Posted 10 days ago, modified 10 days ago
    1. Ha - that looks like the thing. These were everywhere, so I have some photos of males too, which I think can confirm the species. Posted 10 days ago, modified 10 days ago
    2. Maybe Bibio xanthopus? lots of discussion on BugGuide, but one of the characteristics seems to be antenna segments. These guys have 8 or 9, I think. B. femoratus has 6 or fewer. The male I have photos of has red rather than dark femora. Not sure about the wings though... both the male and female had light colored wings rather than dark. Posted 10 days ago
      1. Interesting! Leg colors can vary, but I would expect a male B. vestitus to have dark femora. Bibio xanthopus does seem like a good option. It seems the tibial spurs are also an important diagnostic feature. Maybe you saw this, but there's some good info here:
        Posted 9 days ago

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By morpheme

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Uploaded May 12, 2022. Captured May 11, 2022 11:32 in 958C+XJ Fishtrap, WA, USA.
  • X-E2
  • f/8.0
  • 1/250s
  • ISO200
  • 80mm