Diptera.info :: Identification queries :: Diptera (adults)
 Is this Siphona sp. ID-able?
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| R_Majoor |
Posted on 17-01-2022 17:07
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Member Location: Wageningen Posts: 25 Joined: 20.06.17 |
I found this Siphona sp. last year on a flower of Jacobaea vulgaris, in a small area that is being 'naturalized' over the past three years. I wondered whether this might be a Siphona species that can be identified from photos. See also https://waarneming.nl/observation/232473154/. date: 2021-09-14 locatone: Wageningen - 't Pasje (GE) foto's:         Thanks in advance! Rayan Majoor |
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| Zeegers |
Posted on 17-01-2022 18:38
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Member Location: Soest, NL Posts: 19293 Joined: 21.07.04 |
Looks like a straightforward S. geniculata Theo |
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| R_Majoor |
Posted on 25-01-2022 21:03
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Member Location: Wageningen Posts: 25 Joined: 20.06.17 |
Hi Theo, thank you! I read in another topic that the Siphonas often were difficult or impossible to ID, but this species is an exception then? Or do you just have to be able to see the right characteristics? And if so, is there some identification key I could use? Kind regards, Rayan Majoor |
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| Zeegers |
Posted on 26-01-2022 08:20
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Member Location: Soest, NL Posts: 19293 Joined: 21.07.04 |
The bad news: Siphona are hopelessely difficult and require a lot of experience. Theo good news: geniculata is by far the most common one and the most easy to recognize. So always sart with the question “Is it geniculata or not “? If it checks these * syntergite 1&2 with strong central marginal bristles * parafacial relatively broad * parafacial with a lot of hairs ( > 10) * third antennal segment shorter than you have geniculata ! Theo |
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| R_Majoor |
Posted on 25-03-2022 21:06
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Member Location: Wageningen Posts: 25 Joined: 20.06.17 |
Ah, that is very helpful to know. Thank you again! I will definitely keep photographing these fellas and just hope that they are identifiable. Kind regards, Rayan Majoor |
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