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Hi, I have an automated camera monitoring system for recording honeybees visiting thistle Cirsium arvense. In addition to honeybees other insects have been visiting the thistle. Is it possible to identify the different Diptera to species level? Location: Norway, Date: August. The diameter of the flower is about ~1.25 cm

For images see the attached link:

https://figshare..../2007171/1

If, you know, please answer with a reference to the image no.

Regards,
Kes,

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Sorry, but clicking the link in my (outdated office) version of Internet Explorer I get to a page without image content, in (a likewise not completly up-to-date verion of) Chrome I can see links to 8 images, but each gives the following error:
{"message": "Insufficient permisions", "code": "InsufficientPermissions"}

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The same with updated Firefox: {"message": "Insufficient permisions", "code": "InsufficientPermissions"}

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Hi, sorry I forgot to make the link public. I have updated the link, could you try it once more?

Regards,
Kes

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5988: Episyrphus balteatus (Syrphidae)
6113, 6973: Sarcophagidae
6283: Chrysotoxum bicinctum (Syrphidae)
7102: Conopidae

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Thanks for help :)

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Now your link is working, so welcome to the forum!
You would make it easier for us if you posted pictures here in the forum, and just one fly per thread. The threads should be searchable by visitors.
At the moment it takes a lot of time to load the big files.
No. 7560 seems to be a Tachinid, my guess is Solieria spec.
No. 6226 also belongs to Tachinidae.
No. 6021 is probably a Syrphidae male.
To get a safe identification, pics of better quality are needed, showing the fly at a close distance and from different angles.
Regards, Sundew

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They were made with an automatic camera so different angles will be a challenge. ;)

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Yes, the angle I have used is most optimal for the automatic trigger system. Light changes at the flower triggers the photo shots. Initially I have used it to register activity of honeybees, but as Diptera has been frequently visitors I wish to pay them more attention.