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Diptera.info :: Identification queries :: Diptera (adults)
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small Tachinid in February -> no, Metopia grandii (Sarcophagidae)
Carnifex
#1 Print Post
Posted on 21-02-2021 01:10
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Location: Vienna, Austria
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about 6.5 mm long, Vienna city area

inaturalist-open-data.s3.amazonaws.com/photos/113509558/large.jpeg
inaturalist-open-data.s3.amazonaws.com/photos/113509585/large.jpeg
inaturalist-open-data.s3.amazonaws.com/photos/113509596/large.jpeg
Edited by Carnifex on 23-02-2021 12:19
Cheers, Lorin

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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.
 
Zeegers
#2 Print Post
Posted on 21-02-2021 09:54
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Location: Soest, NL
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Outdoors ?

Definitely a Sarc, I think Ptychoneura.

Theo
 
Carnifex
#3 Print Post
Posted on 21-02-2021 11:58
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an overwintering Sarc? Wasn't aware these existed
Cheers, Lorin

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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.
 
Zeegers
#4 Print Post
Posted on 21-02-2021 14:50
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Can’t be. Ptychoneura is a cleptoparasite of stem-breeding Aculeata.

Theo
 
Carnifex
#5 Print Post
Posted on 21-02-2021 15:09
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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 Grin
Cheers, Lorin

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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.
 
Zeegers
#6 Print Post
Posted on 21-02-2021 16:25
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Location: Soest, NL
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I’d like to see the abdomen from above and obliquely behind (say, 45 degrees angle)

Theo
 
Carnifex
#7 Print Post
Posted on 21-02-2021 23:29
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do these views help?

inaturalist-open-data.s3.amazonaws.com/photos/113617759/large.jpeg
inaturalist-open-data.s3.amazonaws.com/photos/113617738/large.jpeg
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.
 
Zeegers
#8 Print Post
Posted on 22-02-2021 09:50
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Location: Soest, NL
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Maybe it is better to use Oebalia instead of Ptychoneura, it is a matter of opinion.

This is Oe. cylindrica.

Theo
 
Carnifex
#9 Print Post
Posted on 22-02-2021 10:00
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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

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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.
 
Zeegers
#10 Print Post
Posted on 22-02-2021 14:00
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It is difficult to see, maybe I overlooked those. It is possible to give a better view .

Thanks

Theo
 
Carnifex
#11 Print Post
Posted on 22-02-2021 15:37
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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

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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.
 
Zeegers
#12 Print Post
Posted on 22-02-2021 20:44
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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
 
Carnifex
#13 Print Post
Posted on 22-02-2021 21:56
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It seems to be Metopia grandii. No anteroventral bristle on the mid tibia. Unless I missed something, this would be a first for Austria

inaturalist-open-data.s3.amazonaws.com/photos/113714272/large.jpeg
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.
 
Zeegers
#14 Print Post
Posted on 23-02-2021 11:38
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Location: Soest, NL
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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
 
Carnifex
#15 Print Post
Posted on 23-02-2021 12:18
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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.
 
Zeegers
#16 Print Post
Posted on 23-02-2021 13:24
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Location: Soest, NL
Posts: 15994
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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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