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Diptera.info :: Identification queries :: Diptera (adults)
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Tachinidae - Belida angelicae, male.
Morten A Mjelde
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Posted on 08-11-2023 23:42
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I guess this Tacinid will be a challenge. Found in forest area, Southern Norway, 7 July.
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Edited by Morten A Mjelde on 20-11-2023 18:51
 
Morten A Mjelde
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Morten A Mjelde
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John Carr
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Posted on 09-11-2023 01:28
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A late Phorocera?
 
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neprisikiski
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Posted on 09-11-2023 13:15
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I think it is not Phorocera, as it has postpronotal setae in a distinct triangle.
Plesae check for the hairs on the vein R4+5, if there are hairs to the midway of the R-M crossvein, than it could be Belida angelicae.
Erikas
 
John Carr
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Posted on 09-11-2023 16:03
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neprisikiski wrote:
I think it is not Phorocera, as it has postpronotal setae in a distinct triangle.
Plesae check for the hairs on the vein R4+5, if there are hairs to the midway of the R-M crossvein, than it could be Belida angelicae.


According to the Central European key Belida has bare eyes and a broader frons (at least 0.71 as wide as an eye). As a member of tribe Blondeliini it should not have a right-angled bend in vein M.
 
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Morten A Mjelde
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Posted on 09-11-2023 18:34
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Thank you very much John and Erikas!
I think the third antennal segment is too small to be Phorocera obscura...

Morten
 
neprisikiski
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Posted on 10-11-2023 01:24
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In the tribe Exoristini postpronotal setae are not arranged in a distinct triangle, therefore I excluded them.
Erikas
 
neprisikiski
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Posted on 10-11-2023 02:49
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You may include just three characters in the interactive key of Cerretti for Exoristinae (1. eye pubescent, 2. postpronotal setae in a triangle and 3. depression on basal syntergite extending on the proximal half) and you will get only three genera: Istocheta, Lecanipa and Ptesiomyia. The first two are Blondeliini with obtuse angle of medial vein, therefore the third one is the most suitable identificaion.
Erikas
 
neprisikiski
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Posted on 10-11-2023 09:08
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Ptesiomyia alacris, to be more precise.
Erikas
 
Morten A Mjelde
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Posted on 10-11-2023 20:03
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Nice! Thanks a lot!

Morten
 
Zeegers
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Posted on 11-11-2023 08:47
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but the first supra-alar is short, I’d say that is a no-go.
Habitus is like Belida, costal spine is strong, eye look bare in one pic and hairy in the other, very confusing, apical scutellars are short, …

I still think it is Belida. Vertex is not that broad ….

Theo
 
Morten A Mjelde
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Posted on 11-11-2023 11:47
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Thank you, Theo! Smile

Morten
 
neprisikiski
#20 Print Post
Posted on 11-11-2023 12:51
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I also had doabts about Ptesiomyia, but Morten has ignored my first question about the bristles on the vein R4+5, so could you answer please? Hairs on the eyes seems rather short to be treated as clearly pubescent.
Erikas
 
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