Diptera.info :: Identification queries :: Diptera (adults)
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 Lauxaniidae Sapromyzosoma
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| serenense7 |
Posted on 20-10-2024 23:17
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Member Location: Posts: 58 Joined: 06.12.15 |
 Luc Bettinelli : France : Poligny : 39800 : 16/10/2024 Altitude : 358 m - Taille : 3-4 mm Réf. : 350437  Luc Bettinelli : France : Poligny : 39800 : 16/10/2024 Altitude : 358 m - Taille : 3-4 mm Réf. : 350436 glais Good evening, this fly placed on ivy a few days ago seems to be Sapromizosoma (notably with the ocellar bristles outside the triangle formed by the ocelli). I rule out quadripunctata from the possibilities because of the 4 rows of acrostical setae. Then, can we move forward? I am lost on the criteria for the points on the abdomen between laevatrispina and quadricincta. It is also not easy to define the number of points on my individual. Thanks for your help. Luc |
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| Paul Beuk |
Posted on 22-10-2024 09:52
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 Super Administrator Location: Netherlands Posts: 19363 Joined: 11.05.04 |
It is more probable that this is laevatrispina than quadricincta. The number of abdominal spots on the abomen is rather variable in this group but in my experience laevatrispina is the proud owner of three pairs more often than quadricincta (note bipunctata is one of the synonyms of that species ) but three pairs for laevatrispina is not 100% reliable.
Paul - - - - Paul Beuk on https://diptera.info |
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| serenense7 |
Posted on 22-10-2024 18:29
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Member Location: Posts: 58 Joined: 06.12.15 |
Thank you Paul. Already, I deduce that my individual has three pairs of points, which seems quite logical, but I was not at all sure. The points criterion is therefore indicative, are the reliable criteria on the genitalia? |
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| Paul Beuk |
Posted on 23-10-2024 08:51
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Super Administrator Location: Netherlands Posts: 19363 Joined: 11.05.04 |
serenense7 wrote: Indeed.
[...], are the reliable criteria on the genitalia? Paul - - - - Paul Beuk on https://diptera.info |
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| serenense7 |
Posted on 26-10-2024 00:40
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Member Location: Posts: 58 Joined: 06.12.15 |
Thank you ! |
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