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Hi,

could that be Bibio johannis? Found on May 23, 21 in Germany, North Bavaria, on a meadow. Estimated size 6-8 mm.

Thanks and Regards,
Eugen

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Bild2

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Bild3

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Hi Eugen, this is most probably a female Bibio rufipes:
- Wings brownish
- Thorax sides partly red
- Abdomen ventrally yellow

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from lowland Bavaria ?

Theo

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Don't you expect them to be here (I'm in Franken, Northern Bavaria, too, and they are quite common here).

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Hi Eric and Theo,

many thanks for your answers. Here we have an Low mountain Range up to 920 msm (Rhön). I found it at 380 msm.

Greetings
Eugen

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Schacht in his checklist for Bayern does not mention this species

https://www.zobodat.at/pdf/ENT_0018_0549-0555.pdf

According to fauna-eu, it is strictly boreal

https://fauna-eu.org/cdm_dataportal/taxon/b25f05f0-a877-43e5-99bf-e4282ec7138b

and johannis often has very red legs ....

So unless you are 1000 % sure and you have males as well, rufipes seems unlikely


Theo

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Hi Theo and thanks for the Schacht-pdf. I will check my females, males and couples - of which I think they are rufipes - again as accurately as possible and come back with the analysis asap.

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That would be great. Of course, I cannot comment on specimens I haven’t seen, but it needs to be double checked. Thanks

Theo

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I still have one photo

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And what about immature johannis or varipes?
Libor

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I disregard female Bibio, so I shouldn’t comment, but I am convinced you are right, Libor. johannis can have totally red legs.

Theo

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I've looked again at the images and on #1 I think I can see the V-shaped callus on the frons which should be significant for the female rufipes (Bibionidae de la faune Belge, Jan Verbeke). If you compare this snippet with your original photo you may see it more clearly.

Eric

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Hi together,

thank you very much for your effort. I have attached an enlarged section again. Unfortunately, it doesn't get any better.

Greetings
Eugen