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 small Tachinid in February -> no, Metopia grandii (Sarcophagidae)
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| Carnifex |
Posted on 21-02-2021 00:10
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 Member Location: Posts: 1833 Joined: 23.06.15 |
about 6.5 mm long, Vienna city area  
Edited by Carnifex on 23-02-2021 11:19 Cheers, Lorin Font Color All requests are from the urban area of Vienna, if not otherwise stated. My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated. |
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| Zeegers |
Posted on 21-02-2021 08:54
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Member Location: Posts: 18446 Joined: 21.07.04 |
Outdoors ? Definitely a Sarc, I think Ptychoneura. Theo |
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| Carnifex |
Posted on 21-02-2021 10:58
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Member Location: Posts: 1833 Joined: 23.06.15 |
an overwintering Sarc? Wasn't aware these existed
Cheers, Lorin Font Color All requests are from the urban area of Vienna, if not otherwise stated. My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated. |
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| Zeegers |
Posted on 21-02-2021 13:50
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Member Location: Posts: 18446 Joined: 21.07.04 |
Can’t be. Ptychoneura is a cleptoparasite of stem-breeding Aculeata. Theo |
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| Carnifex |
Posted on 21-02-2021 14:09
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Member Location: Posts: 1833 Joined: 23.06.15 |
Yes, I read that too - I guess I will have to make more photos, of the head especially. Also, originally described by Fallén and Meigen as 'Tachina', so I am in good company 
Cheers, Lorin Font Color All requests are from the urban area of Vienna, if not otherwise stated. My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated. |
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| Zeegers |
Posted on 21-02-2021 15:25
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Member Location: Posts: 18446 Joined: 21.07.04 |
I’d like to see the abdomen from above and obliquely behind (say, 45 degrees angle) Theo |
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| Carnifex |
Posted on 21-02-2021 22:29
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Member Location: Posts: 1833 Joined: 23.06.15 |
do these views help? 
Cheers, Lorin Font Color All requests are from the urban area of Vienna, if not otherwise stated. My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated. |
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| Zeegers |
Posted on 22-02-2021 08:50
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Member Location: Posts: 18446 Joined: 21.07.04 |
Maybe it is better to use Oebalia instead of Ptychoneura, it is a matter of opinion. This is Oe. cylindrica. Theo |
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| Carnifex |
Posted on 22-02-2021 09:00
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Member Location: Posts: 1833 Joined: 23.06.15 |
The photo of the head profile shows a row of bristles running down the parafacials. Wouldn't this exclude Obealia/Ptychoneura? Could Metopia also be an option? Cheers, Lorin Font Color All requests are from the urban area of Vienna, if not otherwise stated. My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated. |
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| Zeegers |
Posted on 22-02-2021 13:00
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Member Location: Posts: 18446 Joined: 21.07.04 |
It is difficult to see, maybe I overlooked those. It is possible to give a better view . Thanks Theo |
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| Carnifex |
Posted on 22-02-2021 14:37
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Member Location: Posts: 1833 Joined: 23.06.15 |
Apologies, at the time of posting, I did not know what features to focus on, so the bristles are hardly visible. Irrespective of the final ID, still wondering about the phenology (occurence in February!) Cheers, Lorin Font Color All requests are from the urban area of Vienna, if not otherwise stated. My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated. |
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| Zeegers |
Posted on 22-02-2021 19:44
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Member Location: Posts: 18446 Joined: 21.07.04 |
The phenology is off in any case. If it is Metopia, it is likely campestris, which I have never seen earlier than end of April. Theo |
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| Carnifex |
Posted on 22-02-2021 20:56
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Member Location: Posts: 1833 Joined: 23.06.15 |
It seems to be Metopia grandii. No anteroventral bristle on the mid tibia. Unless I missed something, this would be a first for Austria
Cheers, Lorin Font Color All requests are from the urban area of Vienna, if not otherwise stated. My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated. |
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| Zeegers |
Posted on 23-02-2021 10:38
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Member Location: Posts: 18446 Joined: 21.07.04 |
Of course ! Marginals on syntergite 1&2 are lacking ! Metopia grandii male it is. Please change the title of this thread, so that we are able to find it. Theo |
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| Carnifex |
Posted on 23-02-2021 11:18
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Member Location: Posts: 1833 Joined: 23.06.15 |
Theo, thanks for this fruitful discussion. One last question, how to determine the gender here? This species doesn't show the flashy parafacials as other species of the genus Cheers, Lorin Font Color All requests are from the urban area of Vienna, if not otherwise stated. My Diptera observations (and other living forms) can be found here, and corrections or comments over there would also be appreciated. |
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| Zeegers |
Posted on 23-02-2021 12:24
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Member Location: Posts: 18446 Joined: 21.07.04 |
Well, it is a guess, based on length of third antennal segment, shape of abdominal tip and of course date (males are earlier) Theo |
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but don't see the image in the post.