Diptera.info :: Identification queries :: Diptera (adults)
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 Bibionidae: Bibio marci/sardocyrneus?
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| ESant |
Posted on 14-01-2026 13:50
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Member Location: L'Aquila, Italy Posts: 2230 Joined: 20.09.20 |
Hello, I photographed this fly in the Gennargentu Mountains, Sardinia (NU), Italy, 1620m a.s.l. on May 13th 2025. I think it is a Bibio, and looking at the species recorded for Sardinia the ones that look most similar to me are B. marci and B. sardocyrneus. In Haenni (2009) I read that males of the two species are distinguished based on the morphology of the hind tibiae and tarsi, so I wonder if these pictures are enough to choose one of the two options. Thank you in advance, Emanuele ESant attached the following image:  [289.87Kb] |
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| ESant |
Posted on 14-01-2026 13:51
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Member Location: L'Aquila, Italy Posts: 2230 Joined: 20.09.20 |
Photo 2:
ESant attached the following image:  [295.46Kb] |
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| eklans |
Posted on 14-01-2026 14:23
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Member Location: Franconia, Germany Posts: 4422 Joined: 11.11.18 |
I compared your fly with my B. marci and according to Haenni I'm quite sure that it is the Bibio sardocyrneus indeed: the hind tarsomeres are distinctly inflated while parallel-sided in B. marci. I also see that your fly's pilosity is more brownish than in B. marci as are the wings.
Greetings, Eric |
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