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date: 08 Oct. 2023; location: in Hamburg, Germany, in a park area close to a small lake;
a male of a Bibio species: B. longipes or B. clavipes?
Can anybody help with the correct ID?
Thanks and best regards, Volker

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2nd picture

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3rd picture

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4th picture

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I don't dare to make the call


Theo

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But I do - supported by a nice paper of Theo Zeegers

It's Bibio clavipes:

Pterostigma overschrijdt subcosta: nee (betrouwbar)
Vleugel man: melkwit (betrouwbar)

From:
de zwarte vlieg bibio longipes, een late herfstsoort, by Theo Zeegers
in: Nederlandse Faunistische Medelingen 48 - 2017

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Thanks a lot, Eric and Theo!
Great, that the species ID could be clarified.
Best regards, Volker

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Whoah, who is this guy from this key ?

Now, for serious

the milky wing is very conspicuous in the field, but very tricky to assess from pictures, in my experience.
On the right wing in the first pic the stigma crosses the vein, or so it seems.

Theo