Thread subject: Diptera.info :: Wasp from June > Ancistrocerus cf trifasciatus [Libor]
Posted by Stephen R on 21-11-2009 16:10
#1
These were flying in Yorkshire for a week or two around June 20. I haven't checked the size, but I guess about 7-8mm [EDIT: this is correct]. Any help appreciated!
Edited by Stephen R on 22-11-2009 18:40
Posted by libor on 21-11-2009 17:57
#2
Hymnenoptera: Vespidae: Eumeninae: Ancistrocerus sp., male. This genus is very difficult to ID under microscope, almost impossible from a single picture. But in this animal i would say A. trifasciatus, 90% :-). Libor
Posted by Stephen R on 21-11-2009 18:51
#3
Many thanks Libor, I wasn't expecting such a complete answer!
Stephen
Posted by Stephen R on 22-11-2009 18:45
#4
I found another view which adds a little more detail.
Posted by libor on 22-11-2009 19:02
#5
hmm, much better, but not the best view. In these wasps, the shape of 2nd sternum solves almost everything. But in general, this view supports my first ID. Libor
Posted by Stephen R on 22-11-2009 21:12
#6
Next time I'll shoot it as it flies over my head! Thanks again Libor :)