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Hello,
thats my first post here. I'm not a diptera specialist, but I'm interested in fotograph a wide field of species with a correct determination to confirm the distribution of several species.

This fotos are done on 02.06.2018 in South Palatina, Germany, ca. 220m NN, on a forest track on Aegopodium podagraria.

I think it's a Tenthredo, but I've not any idea what kond of. I can show you 5 pictures, from a copulation too, noticable is that one of the partners has no yellow marks, beside of the legs.

Hope it is enohgh to determine it, thanks Rainer