Thread subject: Diptera.info :: dilophus sp.
Posted by Robert Heemskerk on 27-08-2006 01:28
#1
hi flyforum,
This looks like a Dilophus sp. to me..
Is it a male Dilophus femoratus? :)
robert heemskerk,
Edited by Robert Heemskerk on 27-08-2006 01:35
Posted by Zeegers on 27-08-2006 10:43
#2
It's a male Dilophus.
They can only by IDed by their genitalia.
However, D. febrilis is much more common than femoratus.
Theo Zeegers
Posted by Robert Heemskerk on 03-09-2006 00:46
#3
Hi Theo,
Are the Dilophus female sp. also difficult to identify?
Today I found very much Doliphus sp., It must be ~ 5000 (and more..)
male and female together.
place: Gaasperplas (Amsterdam)
size ~ 10mm
Edited by Robert Heemskerk on 03-09-2006 11:05
Posted by Zeegers on 03-09-2006 15:32
#4
This is a female D. febrilis, easily recognized by the very dark wings.
The only common species in The Netherlands.
And the only one outside the dune area (so far)
Theo Zeegers
Posted by Juergen Peters on 03-09-2006 20:46
#5
Hello!
Sorry for linking to a german post in another (my own) forum, but I did not get an answer there, whether the numerous Bibionidae which can be found now (photos from September-01) are also
Dilophus febrilis. Is it normal to find 95% females and only occasional males? Thanks for any replies!
http://insektenfo...eadid=3037
(Click on images for larger versions.)
Edited by Juergen Peters on 03-09-2006 20:47
Posted by Zeegers on 03-09-2006 22:13
#6
Hi Juergen,
The answers to all your questions are: YES
Yes, it is normal to see many Dilophus in late summer,
Yes, they are D. febrilis (second generation)
and yes,
you see in some place more females.
Males form clouds as in Empididae, females are more frequent on flowers.
Yours are febrilis as well (females with dark wings, easy)
Theo Zeegers
Posted by Juergen Peters on 04-09-2006 01:06
#7
Hello, Theo!
Zeegers wrote:
The answers to all your questions are: YES
Thanks a lot!
Yes, it is normal to see many Dilophus in late summer
But I can't remember to ever have seen *that* many :-).