Thread subject: Diptera.info :: Urophora stylata?
Posted by Colin M on 09-01-2010 19:42
#1
This pretty ~5 mm fly is perched on a thistle (
Cirsium sp). It was photographed June 28 2009 in the Metro Vancouver area of British Columbia, Canada. Surrounding habitat was open meadow/wetland near a small freshwater lake. I wonder if it is
Urophora stylata. It was introduced to this area in 1973 as described in this link.
www.for.gov.bc.ca...tylata.htm
Posted by Paul Beuk on 09-01-2010 20:12
#2
Certainly looks like it, but then again I do not know if there were similar native species.
Posted by Nosferatumyia on 09-01-2010 21:17
#3
Yes it is. Certainly
Urophora stylata. No other native or introduced species in the New World looking like this.
Cirsium certainly must be
C. arvense.
Edited by Nosferatumyia on 09-01-2010 21:18
Posted by Colin M on 09-01-2010 22:19
#4
Thank you, very interesting.
Cirsium could be
vulgare, as the fly was introduced to control that species, but I'm afraid I was so intent on the fly that I did not confirm the thistle. In any case, we have plenty of those two thistles around here.