Diptera.info :: Identification queries :: Diptera (adults)
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 Drosophilidae: Cacoxenus indagator? - yes
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| mammut |
Posted on 17-04-2018 22:38
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Member Location: Castel Maggiore, Italy Posts: 121 Joined: 07.12.11 |
This tiny fly (4-5 mm) visited several times a nesting site for bees (Osmia cornuta) situated on my balcony near Bologna, Italy. To me it looks like Cacoxenus indagator - is this the only possible species or are there other species with which it might be confused? Thanks for your help. The pictures were taken on April 7, 2018. mammut attached the following image:  [96.4Kb] Edited by mammut on 21-04-2018 23:02 |
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| mammut |
Posted on 17-04-2018 22:40
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Member Location: Castel Maggiore, Italy Posts: 121 Joined: 07.12.11 |
Photo 2
mammut attached the following image:  [123.63Kb] |
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| mammut |
Posted on 17-04-2018 22:41
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Member Location: Castel Maggiore, Italy Posts: 121 Joined: 07.12.11 |
photo 3
mammut attached the following image:  [124.66Kb] |
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| evdb |
Posted on 17-04-2018 22:41
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 Member Location: France (Loiret) Posts: 1350 Joined: 05.12.11 |
No doubt for me but I am not a specialist
Eugene |
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| mammut |
Posted on 17-04-2018 22:41
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Member Location: Castel Maggiore, Italy Posts: 121 Joined: 07.12.11 |
photo 4
mammut attached the following image:  [106.92Kb] |
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| mammut |
Posted on 17-04-2018 22:44
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Member Location: Castel Maggiore, Italy Posts: 121 Joined: 07.12.11 |
photo 5 taken on April 8, 2018 but which should show the same species after a visit in one of the bee's nests
mammut attached the following image:  [108.14Kb] |
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| mammut |
Posted on 18-04-2018 23:20
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Member Location: Castel Maggiore, Italy Posts: 121 Joined: 07.12.11 |
Thank you Eugene ! |
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| Ectemnius |
Posted on 20-04-2018 12:32
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Member Location: The Netherlands Posts: 846 Joined: 22.11.11 |
Hello mammut, There are several other species of Cacoxenus in Europe. No known from Italy, but that doesn't tell a lot. I can however count about twelve visible acrostical rows on the scutum in your photo's. That confirms it as Cacoxenus indagator Loew, 1858. The other four European species have ten rows at maximum. Kind regards, Ectemnius |
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| mammut |
Posted on 21-04-2018 23:01
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Member Location: Castel Maggiore, Italy Posts: 121 Joined: 07.12.11 |
Thank you very much Ectemnius for your confirmation and the explanations! kind regards Mammut |
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