Thread subject: Diptera.info :: Cannibalism - Robberyflies

Posted by Markus Gebel on 20-07-2006 13:10
#1
Hello

Here I show a robbery fly which eats a fellow. Which species are to be seen on the picture??? The photo arose in West-Germany in an old oak forest (15.07.2006). Both flies were very big and strong.
Who can help me?

Greetings
Markus
Edited by Markus Gebel on 20-07-2006 13:13

Posted by Tony Irwin on 21-07-2006 21:27
#2
These are Eutolmus rufibarbis females. This is a species normally associated with heathland and other sandy areas in Britain, but it also occurs in open woodland. The ovipositor shape is quite distinctive.
Another stunning shot - brilliant! ;)

Posted by Markus Gebel on 22-07-2006 22:31
#3
@Tony: What would I do without your references?;) Thanx!

Your compliments please me very much, but this foto is maken from my friend, but the other photographs are from me.:-)

best regards
Markus

http://www.digitale-naturfotos.de/

Posted by Markus Gebel on 23-07-2006 23:35
#4
@Tony: What do you think about Dysmachus trigonus (Meigen, 1804)?

Greetings
Markushttp://www.digita...rfotos.de/

Posted by Tony Irwin on 24-07-2006 00:32
#5
Hi Markus
Dysmachus has much longer bristles on the hind margin of the tergites, and on the thorax. Also in Dysmachus most of the large leg bristles are white, not black. The ovipositor is certainly similar to Eutolmus, but there are differences in shape which are evident in the photo.

Posted by Markus Gebel on 24-07-2006 00:49
#6
Hello Tony

You name fineness which I would'nt have seen without your aid. Yes, the bristles are here black. Seen very good Tony.;)

Thanx a lot..-)... and many greetings from the very hot Germany

Markus