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Diptera.info :: Identification queries :: Diptera (adults)
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Tachinidae but which species? => Estheria cristata
Volker
#1 Print Post
Posted on 31-07-2022 12:53
Member

Location: Bexbach/Germany
Posts: 263
Joined: 15.05.08

Hello,

I saw this fly several times on mint today. Is it possible to identify the species? By clicking on the pictures -> enlargement

Greetings, Volker

abload.de/img/fly68kvu.jpg
abload.de/img/fly201k9j.jpg
abload.de/img/fly3omjoh.jpg
Edited by Volker on 08-08-2022 17:23
www.cecidologie.de/Bilder/fliege.gif
 
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eklans
#2 Print Post
Posted on 31-07-2022 13:32
Member

Location: Franconia, Germany
Posts: 2527
Joined: 11.11.18

Hi Volker, this is surely a female of the Tachinidae - my first ideas failed, but I'm still searching and if you change the title of your thread, help will come soon Smile
Greetings, Eric
 
eklans
#3 Print Post
Posted on 31-07-2022 14:06
Member

Location: Franconia, Germany
Posts: 2527
Joined: 11.11.18

My first suspicion will be my last: Linnaemyia cf. tesselans. But I'm not sure as the mouth is not as protruding as it should be. Maybe it's because the proboscis is working...
Edited by eklans on 31-07-2022 14:07
Greetings, Eric
 
Zeegers
#4 Print Post
Posted on 31-07-2022 16:25
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Location: Soest, NL
Posts: 17490
Joined: 21.07.04

Female Estheria cf, cristata ( try to figure out the DC !)


Theo
 
Volker
#5 Print Post
Posted on 31-07-2022 16:33
Member

Location: Bexbach/Germany
Posts: 263
Joined: 15.05.08

Hello Eric and Theo,

first of all, thank you for your opinions. I would then shortlist Estheria cf, cristata, it has the greater resemblance to my specimen. What is meant by DC -> dorso-central bristles? Do you mean what I have marked in the picture?

Greetings, Volker
Volker attached the following image:


[73.13Kb]
Edited by Volker on 31-07-2022 17:09
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Zeegers
#6 Print Post
Posted on 31-07-2022 17:12
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Location: Soest, NL
Posts: 17490
Joined: 21.07.04

Yes, it is an distinctive feature vs. E. bohemani.

Theo
 
Volker
#7 Print Post
Posted on 31-07-2022 17:35
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Location: Bexbach/Germany
Posts: 263
Joined: 15.05.08

Hello Theo,

then may I refer to my specimen as Estheria cristata?

Greetings, Volker
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Zeegers
#8 Print Post
Posted on 31-07-2022 19:19
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Location: Soest, NL
Posts: 17490
Joined: 21.07.04

I don’t know, I can’t establish the number of post DC. Maybe you can, on the hi-res.

Theo
 
Volker
#9 Print Post
Posted on 01-08-2022 07:07
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Location: Bexbach/Germany
Posts: 263
Joined: 15.05.08

Hello Theo,

I counted 4 bristles in the middle and 2 on each side. I hope you mean these bristles?

Greetings, Volker
Volker attached the following image:


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Sundew
#10 Print Post
Posted on 01-08-2022 14:13
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Location: Berlin and Baden-Württemberg, Germany
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Joined: 28.07.07

Volker, you have been a forum member since 2008 - you should already know better! Why don't you use the glossary https://diptera.i...mp;cat_id= and look for "dorsocentral setae" and "postsutural"? This one is also great: http://www.tachin...nition.htm. Your last picture shows that you really have to deal with the terms - that's your task Wink, the experts do not have time to teach you.
Then, you got already 2 alternatives: E. cristata and E. bohemani. The first thing I do in such cases is to go into the forum search and look for all older threads that contain information about these species and compare the pictures. Especially in the old threads there is much more informative discussion of the characters. You can learn an enormous lot - get active!
And, by the way, I see 3 postsutural dorsocentrals, so I'd go for E. cristata, too Grin.
Best wishes, Sundew
Sundew attached the following image:


[30.38Kb]
 
Sundew
#11 Print Post
Posted on 01-08-2022 14:26
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And one more remark (as I advised to learn from older threads): Even experts can make mistakes. In https://diptera.i...d_id=96278 my fly was said to be E. cristata because of 4 ps dc, but cristata has 3. I add the key from https://tachinida...igures.pdf.
(Now it's my problem with my fly species - the characters "scutellum yellow" and "4 ps dc" do not match... You are luckier, your's should have a yellow scutellum, and it has!)
Sundew attached the following image:


[60.98Kb]
Edited by Sundew on 01-08-2022 14:35
 
Volker
#12 Print Post
Posted on 01-08-2022 15:43
Member

Location: Bexbach/Germany
Posts: 263
Joined: 15.05.08

Hello Sundew,

yes, I've been a member of this forum for many years, but I didn't use to be a frequent visitor. I must admit, I still have a lot to learn about the distribution of hair on the body and I often have problems with abbreviations of terms and words. I am also still learning English, thus it's not always that easy for me. Your references to the two sites are very helpful and I will look at them carefully. In any case, thanks for the determination and your tips.

Greetings, Volker
Edited by Volker on 01-08-2022 15:43
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