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My first post, thank you for letting me in. I am a retired biologist from Lier, close to Oslo, Norway. I am not specialised in Diptera, but encounter a lot of interesting flies. I try to contibute by taking high quality pictures of insects with focus on identification.

In this case I have a fly from my garden photographed on July 25. that should be a Dexiosoma caninum, but it has wings all yellowish and som yellow spots on the abdomen. I haven't found anything similar in pictures of Dexosoma caninum on the internet. Is it an anomaly or could it be another species?

(How do I add a second image?)