Thread subject: Diptera.info :: Pherbellia ID Poland > Ph. silana

Posted by Maks Syratt on 29-10-2023 22:44
#1
I would greatly appreciate some help with this sciomyzid found this April in S Poland. I have looked through the Sciomyzidae of Scandinavia, but I can't seem to find a perfect match.
Many thanks in advance.
Edited by Maks Syratt on 04-11-2023 12:48

Posted by Maks Syratt on 29-10-2023 22:53
#2
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Posted by Maks Syratt on 29-10-2023 22:54
#3
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Posted by Maks Syratt on 29-10-2023 22:54
#4
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Posted by Maks Syratt on 29-10-2023 22:54
#5
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Edited by Maks Syratt on 29-10-2023 22:55

Posted by Maks Syratt on 29-10-2023 22:56
#6
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Posted by Jan Maca on 31-10-2023 09:36
#7
It is Pherbellia silana. Determined by Jiří Preisler.,

Posted by Maks Syratt on 31-10-2023 17:05
#8
Thank you very much!

Posted by Nikita Vikhrev on 31-10-2023 20:27
#9
One more opinion.
1. I'm not at all convinced that Ph. silana exists.
2. Thus, why it is not old and good Fallen's Ph. ventralis ?

Posted by Jan Maca on 01-11-2023 08:42
#10
Jiri Preisler noted: At least according to this paper P. silqana is a good species:
Leo Rivosechi (1989)
Fragm. entomol., Roma 21 (2): 153-161
Note sugli Sciomyzidae IX. Due nuove specie del genere Pherbellia
provenienti dallˇItalia meridionale.

Posted by Nikita Vikhrev on 01-11-2023 20:59
#11
Jan, I agree that according to Rivosechi Ph. silana is a good species.
But the shape of genitalia is strongly depended on the angle of view. Thus, it isn't easy to interpret genitalic difference.

Posted by Maks Syratt on 02-11-2023 22:06
#12
I have managed to find Rozkosny's key to the Pherbellia of the Palaearctic and looked at the terminalia at various angles under the microscope. I did not observe the posterior part of the gonostylus to be bifid, which according to the key should mean this is indeed Ph. silana