Diptera.info :: Identification queries :: Diptera (adults)
 Bibionidae: Bibio cf. johannis ♂
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| ESant |
Posted on 10-01-2026 15:39
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Member Location: L'Aquila, Italy Posts: 2244 Joined: 20.09.20 |
Hello, I photographed this fly in the Gennargentu Mountains, Sardinia (NU), Italy, 1820m a.s.l. on May 13th 2025. I think it is a Bibio, but is it possible to identify its species based on these photos? Thank you in advance, Emanuele ESant attached the following image:  [286.97Kb] Edited by ESant on 13-01-2026 15:03 |
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| ESant |
Posted on 10-01-2026 15:39
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Member Location: L'Aquila, Italy Posts: 2244 Joined: 20.09.20 |
Photo 2:
ESant attached the following image:  [294.93Kb] |
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| eklans |
Posted on 10-01-2026 18:21
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Member Location: Franconia, Germany Posts: 4444 Joined: 11.11.18 |
I think it's a male B. varipes (I've compared reticulatus, varipes and johannis, maybe there's another resembling species in Italy?)
Greetings, Eric |
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| Zeegers |
Posted on 11-01-2026 14:57
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Member Location: Soest, NL Posts: 19271 Joined: 21.07.04 |
Italy is tricky, but I dont seenehybit couldnt be johannis ... varipes seems quite unlikely to me. Legs much too orange Theo |
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| ESant |
Posted on 11-01-2026 15:58
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Member Location: L'Aquila, Italy Posts: 2244 Joined: 20.09.20 |
Thank you both very much! Considering the species reported for Sardinia in the new Checklist of Italian Fauna, the best option seems to be B. johannis. Is there any particular feature that excludes it here? |
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| eklans |
Posted on 11-01-2026 17:04
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Member Location: Franconia, Germany Posts: 4444 Joined: 11.11.18 |
I (still a beginner) have excluded B. johannis because of the completely black femora (FIII should have a pale or even yellowish base?) and I thought I see a pale halter in the first image. But these characters may be variable and I could only find one single male johannis to date in a bad condition.
Greetings, Eric |
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| Zeegers |
Posted on 13-01-2026 11:40
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Member Location: Soest, NL Posts: 19271 Joined: 21.07.04 |
Leg colouration in johannis is notoriously unreliable. Femora can be red, black, or in between Theo |
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| ESant |
Posted on 13-01-2026 15:03
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Member Location: L'Aquila, Italy Posts: 2244 Joined: 20.09.20 |
Thank you again for the clarifications. I will archive these photos as B. johannis, but with a "cf.", just in case. |
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| eklans |
Posted on 13-01-2026 15:03
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Member Location: Franconia, Germany Posts: 4444 Joined: 11.11.18 |
Thanks a lot, Theo - is jotted down 
Greetings, Eric |
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