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Diptera.info :: Identification queries :: Diptera (adults)
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Sargus?
Markus Koschinsky
#1 Print Post
Posted on 13-10-2021 08:46
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Posts: 77
Joined: 11.05.17

Location: Germany, Northrhine-Westphalia, Rheine, 35 m above sea level, garden (sandy & dry)
Time: 1st Oct 2021
Photos: Markus Koschinsky
Body size: approx. 15 mm

Dear Forum,

I found this quite long fly on a plant directly next to a compost. It had little greenish glance, but mostly purple and yellowish glance at the thorax. Although a femal, it did not have red segments at the abdomen, which speaks against Sargus bipunctatus, but the pale legs seem to speak for S. bipunctatus.

The fly was sitting very calm and with nearly no movemen (although after a while it vanished), so I'm thinking if it might just be hatched (and therefore maybe not all colours fully developed). .

On the other hand, I'm not really an expert here and might be completely wrong... any help is appreciated!

I'd have a few more close-ups of e. g. the wing venation, abdomen back etc.... if you think it helps, I could add them...

Thanks,

Markus
Markus Koschinsky attached the following image:


[43.91Kb]
 
Markus Koschinsky
#2 Print Post
Posted on 13-10-2021 08:47
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Image 2 (lateral)
Markus Koschinsky attached the following image:


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Markus Koschinsky
#3 Print Post
Posted on 13-10-2021 08:48
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Posts: 77
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Image 3 (head close-up)
Markus Koschinsky attached the following image:


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Markus Koschinsky
#4 Print Post
Posted on 13-10-2021 08:48
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Image 4 (thorax glance)
Markus Koschinsky attached the following image:


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eklans
#5 Print Post
Posted on 13-10-2021 13:23
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Location: Franconia, Germany
Posts: 1617
Joined: 11.11.18

Hi Markus, that's an interesting one: I think it's clearly a Sargus and it's likely a female bipunctatus based on legs, the white line on the sides of the thorax... But it should have a red base of the abdomen and the back is shining like cuprarius! Do you have a lateral photo of the abdomen?
Greetings, Eric
 
Zeegers
#6 Print Post
Posted on 13-10-2021 15:14
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Location: Soest, NL
Posts: 16468
Joined: 21.07.04

Check the field guide !
Clearly a bipunctatus.
Some red semes to glow though the wing and even it doesn’t all other features support bipunctatus.

Theo
 
Markus Koschinsky
#7 Print Post
Posted on 13-10-2021 19:38
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Joined: 11.05.17

Thanks for your help, Eric and Theo!

Don't have really good lateral abdomen pictures. One in higher resolution (but only the rear part), and two including front part, but unsharp... see below...

Anyhow, I take it as S. bipunctatus, even though it's maybe an untypical one... (again: could it be freshly hatched?)

Regards,

Markus
Markus Koschinsky attached the following image:


[47.42Kb]
 
Zeegers
#8 Print Post
Posted on 14-10-2021 08:22
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Location: Soest, NL
Posts: 16468
Joined: 21.07.04

Look more anteriorly.
The second pic shows “clearly” red above the third leg..
 
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17 October 2021 05:22
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23.09.21 15:29
All sorted.

16.09.21 22:24
Sorry put 5 new threads in Asilidae forum instead in Syrphidae forum, can pleas an admin move it to Syrph? THANKS, Norbert

09.09.21 07:48
https://www.jeugdb
ondsuitgeverij.nl/
product/de-vliegen
families-met-drie-
voetkussentjes/

09.09.21 07:47
wing ventation is totally different

03.09.21 12:51
Hi, what's the major difference between dolichopodidae and rhagionidae? Can someone help me? Thanks!

28.06.21 15:24
thx TO eklans

03.06.21 11:11
@Tony Irwin Thank you Tony! I've emailed you there Pfft

02.06.21 22:26
Rob - can you PM me with an e-mail address, and I'll send it over.

02.06.21 13:16
Hello chaps! Does anyone have a copy of: Revision of the willow catkin flies, genus Egle Robineau-Desvoidy (Diptera: Anthomyiidae), in Europe and neighbouring areas ?? I'd be ever so grateful! Rob

31.05.21 14:31
The part that got deleted is "longer, dark median stripe on thorax"

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