Diptera.info :: Identification queries :: Diptera (adults)
 Muscina sp.? --> Polietes lardarius (female)
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| karl7 |
Posted on 26-11-2025 11:19
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Member Location: Posts: 461 Joined: 09.02.25 |
Have a nice Day. One Question please. Is this a Muscidae species, and can it be identified more precisely? The thorax is completely blackish-grey. I would be very grateful for an answer. Location data: Austria, Lower Austria, Tattendorf, 220m, fruit and herb garden, 7.11.2025, size 8-10mm Kind regards Karl. karl7 attached the following image:  [158.89Kb] Edited by karl7 on 26-11-2025 20:09 |
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| karl7 |
Posted on 26-11-2025 11:19
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Member Location: Posts: 461 Joined: 09.02.25 |
2.View
karl7 attached the following image:  [187.28Kb] |
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| eklans |
Posted on 26-11-2025 12:30
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Member Location: Franconia, Germany Posts: 4412 Joined: 11.11.18 |
Hello Karl, it's a female Polietes lardarius - Muscina sp. have a red tip of the scutellum and naked eyes+
Greetings, Eric |
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| Juergen Peters |
Posted on 26-11-2025 12:49
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 Member Location: northwest Germany Posts: 14364 Joined: 11.09.04 |
eklans wrote: Hello Karl, it's a female Polietes lardarius - Muscina sp. have a red tip of the scutellum and naked eyes And at least a gentle bend in the M-vein. I had just written this a few minutes ago  (in german):https://insektenf...post517823 Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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| jck |
Posted on 26-11-2025 16:52
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Member Location: Posts: 1132 Joined: 21.08.12 |
Eric, what features are you using to separate this from P. meridionalis? James |
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| karl7 |
Posted on 26-11-2025 20:08
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Member Location: Posts: 461 Joined: 09.02.25 |
Have a nice evening everyone. Thanks for the replies. Thank you Eric for identifying it as female Polietes lardarius and for the information about Muscina sp. have a red tip of the scutellum. Kind regards Karl. |
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| eklans |
Posted on 27-11-2025 12:50
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Member Location: Franconia, Germany Posts: 4412 Joined: 11.11.18 |
Hi James, why did I choose Polietes lardarius: The morphological differences between P. lardarius and P. meridionalis for a female are not visible on dorsal images alone (anterior spiracle, anterior part of head and lower part of occiput). What helps in this matter is that lardarius appears from V-XI while meridionalis has a range of IV-VIII - I'm sure that November is still too late for meridionalis even with respect to the global warming. Greetings, Eric |
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| jck |
Posted on 27-11-2025 21:28
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Member Location: Posts: 1132 Joined: 21.08.12 |
Eric, if you look at the database of Waarneming.nl, you will see that there are validated records of P. meridionalis with photos for October, November, December and even one at the beginning of January. In my own collection on Waarneming, I have 2 validated records from November, the latest being on the 22nd of that month. I quite agree that this is most probably P. lardarius but I wouldn't go farther than that. James Edited by jck on 27-11-2025 21:34 |
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| eklans |
Posted on 28-11-2025 11:41
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Member Location: Franconia, Germany Posts: 4412 Joined: 11.11.18 |
Thanks James, I'm curious about the entries in Waarneming.nl and see it later today. EDIT: I've checked some of the above-mentioned P. meridionalis in waarneming.nl: observation date doesn't seem to be a relevant criteria. So this fly is Polietes cf lardarius indeed. Edited by eklans on 28-11-2025 12:49 Greetings, Eric |
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| Nikita Vikhrev |
Posted on 28-11-2025 15:02
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 Member Location: Moscow, Russia Posts: 9525 Joined: 24.05.05 |
I'm working on revision of Polietes. It seems that P. meridionalis is a synonym, a colour form.
Nikita Vikhrev attached the following image:  [78.71Kb] Nikita Vikhrev - Zool Museum of Moscow University |
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