Thread subject: Diptera.info :: Tachinidae: Gymnosoma nudifrons or rotundatum?
Posted by Juergen Peters on 05-05-2007 15:47
#1
Hallo, allerseits!
Is it possible to distinguish between the species after these photos? Taken yesterday in Ostwestfalen/Germany. Thanks in advance!
Posted by Juergen Peters on 05-05-2007 15:48
#2
Another picture.
Posted by Zeegers on 06-05-2007 12:08
#3
It's definitely NOT nudifrons and I very much doubt whether this is rotundatum. dolycoridis or clavatum seem more likely.
Theo
Posted by Juergen Peters on 06-05-2007 20:02
#4
Hello. Theo!
Zeegers wrote:
It's definitely NOT nudifrons and I very much doubt whether this is rotundatum. dolycoridis or clavatum seem more likely.
Many thanks! I only had (as far as they could be identified)
nudifrons here, yet, and did not know the other two species mentioned by you.
Posted by Juergen Peters on 06-05-2007 20:13
#5
Hello, Theo!
Zeegers wrote:
dolycoridis or clavatum seem more likely.
One additional question: does the name
dolycoridis indicate, that it parasitizes
Dolycoris baccarum? That would fit very well! We had a mass invasion of these Pentatomidae here in April, they swarmed like bees on the meadows. The species is never rare here, but I had never seen such an accumulation.
Posted by Zeegers on 06-05-2007 20:17
#6
It has been said many times, Gymnosoma are very pretty but very hard to ID from pictures.
Dolycoridis does indeed refer to Dolycoris. Whether this species is monophagous, is another question. Gymnosoma are difficult to rear, parasitazition rates are low (1 - 4 %)
Theo Zeegers
Posted by Juergen Peters on 07-05-2007 23:37
#7
Hello!
On sunday I got this one. Female of the same species?
(1200x1200, 82 KB)
http://www.foto-u...idis_W.jpg