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Diptera.info :: Identification queries :: Diptera (adults)
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Coelopa pilipes- with mite
ebbek
#1 Print Post
Posted on 19-01-2020 17:35
Member

Location: SW Sweden, Halland
Posts: 1410
Joined: 23.06.08

Is Coelopa correct genus for this fly? From a sandy seashore in South Sweden two Days ago.

Regards

Krister
ebbek attached the following image:


[117.79Kb]
Edited by ebbek on 20-01-2020 14:59
 
ebbek
#2 Print Post
Posted on 19-01-2020 17:37
Member

Location: SW Sweden, Halland
Posts: 1410
Joined: 23.06.08

And there is a mite (I Think) under the fourth tergite. Is it possible to say anything about possible mites on Coelopa? Unfortunatly I can´t make better Pictures of the mite at the moment.
ebbek attached the following image:


[225.71Kb]
Edited by ebbek on 19-01-2020 18:47
 
ebbek
#3 Print Post
Posted on 19-01-2020 17:38
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Location: SW Sweden, Halland
Posts: 1410
Joined: 23.06.08

Another view on the mite.
ebbek attached the following image:


[190.72Kb]
 
eklans
#4 Print Post
Posted on 19-01-2020 18:18
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Location: Franconia, Germany
Posts: 3358
Joined: 11.11.18

Hi Krister, that "mite" looks similar to the Strepsiptera, I find quit often on wasps (stylopised wasp). I've never read about flies being parasitised by these "twisted-wing insects" but it seems to be possible.

Eric
 
ebbek
#5 Print Post
Posted on 19-01-2020 18:35
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Location: SW Sweden, Halland
Posts: 1410
Joined: 23.06.08

Yes, I had some thoughts about Strepsiptera too, interesting! Maybe there are species who parasites on flies?
 
eklans
#6 Print Post
Posted on 19-01-2020 19:20
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Location: Franconia, Germany
Posts: 3358
Joined: 11.11.18

These species exist: "Strepsiptera of various species have been documented to attack hosts in many orders, including members of the orders Zygentoma, Orthoptera, Blattodea, Mantodea, Heteroptera, Hymenoptera, and Diptera." (English Wikipedia, Strepsiptera).
Can you try to make more fotos of the parasite?
 
ebbek
#7 Print Post
Posted on 19-01-2020 19:33
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Location: SW Sweden, Halland
Posts: 1410
Joined: 23.06.08

Very interesting - I will try and make better fotos!
 
ebbek
#8 Print Post
Posted on 19-01-2020 21:23
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Location: SW Sweden, Halland
Posts: 1410
Joined: 23.06.08

There are several legs on it, so it is not Strepsiptera - looks more like a mite! No better fotos so far unfortunatly.

Krister
 
Tony Irwin
#9 Print Post
Posted on 20-01-2020 10:14
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Location: Norwich, England
Posts: 7187
Joined: 19.11.04

The fine hairs on the legs suggest that this might be Coelopa pilipes
Tony
----------
Tony Irwin
 
Xylosoma
#10 Print Post
Posted on 20-01-2020 10:37
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Location:
Posts: 43
Joined: 14.10.19

It definitly is Coelopa pilipes. There are frequently mites sitting on Coelopidae using the flies as transport from one heap of seaweed to another (phoresy). Those mites are usually not connected between tergites. I cant say what it is.
Regards
Xylo
 
ebbek
#11 Print Post
Posted on 20-01-2020 15:00
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Location: SW Sweden, Halland
Posts: 1410
Joined: 23.06.08

Very nice - thanks to all of you for help!

Regards

Krister
 
Volker Achterberg
#12 Print Post
Posted on 16-11-2023 10:10
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Location: northern Germany, Hamburg
Posts: 257
Joined: 03.03.21

There is a 2009-paper about the mite Thinoseius fucicola on Coelopa seaweed flies, mainly the male ones:
https://academic.oup.com/ee/article-abstract/38/6/1608/360395?redirectedFrom=fulltext&login=false- (unfortunately w/o any picture)
Direct access to this paper, see reference list in the Wikipedia article about C. frigida:
https://en.wikipedia.org/wiki/Coelopa_frigida
Best regards,
Volker
 
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