Thread subject: Diptera.info :: Bibionidae: Bibio longipes? --> most likely Bibio longipes
Posted by kuv on 14-11-2018 17:47
#1
Northern Germany, Schleswig-Holstein, Pinneberg-Waldenau near Hamburg, at the edge of the mixed forest Klövensteen, at a leaf of Stinging nettle; Outsidephotos: kuv, 16th of October 2017. Perhaps Bibio clavipes? Is my idea ok? Please help to get the ID and whether male or female.
Kuv
Edited by kuv on 17-11-2018 17:40
Posted by kuv on 14-11-2018 17:51
#2
2nd picture:
Posted by Sundew on 14-11-2018 20:53
#3
First, we cannot see the tip of the front tibiae, which is needed to discriminate between
Bibio and
Dilophus. In
Bibio, the front tibiae end in a pair of large spurs, in
Dilophus there is a circlet of small spines. However, the males of the frequent
D. febrilis do not have such swollen hind tibiae and tarsi. So it might be a
Bibio indeed.
There are two autums species,
B. longipes and
B. clavipes (see
https://www.flick...177500145/).
B. clavipes has a rather pale stigma that does not extend into the tip of the costal cell; I saw it in Brandenburg recently. In your case, I would vote for
B. longipes.
Maybe Theo can say more.
Regards, Sundew
Posted by kuv on 15-11-2018 10:12
#4
Thank you very much Sundew |t . I like your comments and sound information (not only to "my diptera"). I'll change headline with B. longipes and questionmark.
Greetings Kuv
Posted by John Carr on 15-11-2018 21:47
#5
Sundew wrote:
First, we cannot see the tip of the front tibiae, which is needed to discriminate between Bibio and Dilophus.
Dilophus has a longer r-m crossvein than
Bibio and a ridge on the front of the thorax.
Posted by Zeegers on 16-11-2018 18:10
#6
In males Dilophus, the hind metatarsus is slender.
So I agree with Sundew, most likely Bibio longips for the reasons given by her.
But I am not dead sure
Theo
Posted by kuv on 17-11-2018 17:40
#7
Thank you very much Sundew, John an Theo.
It's nice to have an ear on the conversation of the experts!
Greetings Kuv