Thread subject: Diptera.info :: Gymnocheta viridis?

Posted by Juergen Peters on 22-04-2006 02:52
#1

Hello!

This fly was sunbathing on a tree trunk yesterday (Ostwestfalen/Germany). It was a little bit bigger and more slender than Lucilia. I suppose it could be Gymnocheta viridis, right? Thanks in advance!

Edited by Juergen Peters on 22-04-2006 02:52

Posted by Zeegers on 22-04-2006 09:16
#2

Juergen,

Congratulations, that's the one.

Males are typically found on stems or trunks of trees in the sun.

Well illustrated by your picture


Theo Zeegers

Posted by Juergen Peters on 22-04-2006 22:14
#3

Hello Theo,

thanks a lot!

Posted by ChrisR on 24-04-2006 10:24
#4

Yup G.viridis were out in force yesterday in Oxfordshire, England. Grin

Posted by Juergen Peters on 25-04-2006 23:57
#5

Hello, Chris!

Chris Raper wrote:
Yup G.viridis were out in force yesterday in Oxfordshire, England. Grin


Two days ago, when that photo was taken, it was the only individual. Yesterday (22 ?C) there were dozens of them on many trees at the wood :-).

Posted by ChrisR on 26-04-2006 12:52
#6

Yes, they can be very numerous. Reminds me of the time I ran a Malaise trap next to a G.viridis tree. When I set the trap there were 4-5 flies on the tree - when I collected the trap 3 days later there were about 10 flies in the trap and 4-5 on the tree. This pattern went on for 2 weeks - I always caught plenty but there were always 4-5 more on the tree.

Needless to say, I wasn't trapping for G.viridis - they were just unfortunate to be in my trapping area. The population wasn't affected in subsequent years - i just think flies are less territorial and far more mobile in the countryside than most people think.