Thread subject: Diptera.info :: Bibionidae - Bibio anglicus ?

Posted by maxi6215 on 30-04-2020 17:34
#1

Hello,

I observed this Bibio the 30th of April in the north of France, approximately 8 mm. I think of a male of Bibio anglicus but hesitate a lot with Bibio marci,
I don't know how to differentiate them with certainty ?

Cordially Maxime

nordpasdecalais.observation.org/fotonew/1/26201431.jpg
nordpasdecalais.observation.org/fotonew/0/26201430.jpg
nordpasdecalais.observation.org/fotonew/9/26201429.jpg

Posted by Zeegers on 30-04-2020 18:40
#2

The wing venation excludes B. marci, however, the spur on front tibia suggests leucopterus. Did you consider this species ?

Theo

Edited by Zeegers on 30-04-2020 19:05

Posted by maxi6215 on 30-04-2020 20:04
#3

No I didn't know this species. Do you have documents illustrating these Bibio like the wing venation… for me to learn ?

Posted by Zeegers on 01-05-2020 11:51
#4

Please check Sundews recent post for a link to Verbeke (1971). Another option is Frreman & Lane in Handbook British Insects, or my own masterpiece (ahum) from 1997, in dutch.
https://www.nev.nl/diptera/vliegenmepper/Vliegenmepper1997-2.pdf

Theo

Posted by Sundew on 01-05-2020 17:46
#5

Hello,
here is the link to the paper by Verbeke: http://biblio.nat...tin-23.pdf
Regards, Sundew

Posted by maxi6215 on 01-05-2020 19:29
#6

Thank you very much for your documents, so for this Bibio, we can conclude in Bibio leucopterus ?

Posted by Zeegers on 02-05-2020 07:41
#7

To me, it remains unclear. The wing seems too dark for leucopterus and the front spurs seem ok in one pic, but not ok in the other.

Theo

Posted by Colobo on 02-05-2020 08:01
#8

ICertainly not leucopterus, which has wings clearly whitish in male. I would rather incline for anglicus (but with a question mark...)

Posted by maxi6215 on 02-05-2020 11:22
#9

Damage thank you for your help