Posted by Alvesgaspar on 09-05-2014 15:22
#1
I have classified this fly as a
S. ribesii but I'm no longer sure. Could it be
S. torvus?
Found in Portugal, a few day ago.
Thanks,
Joaquim
Edited by Alvesgaspar on 09-05-2014 15:23
Posted by Sundew on 09-05-2014 17:06
#2
Females are rather easily specifiable as to the colour of the hind legs.
S. ribesii has completely yellow hind femora; I think I can see that through the wing. Besides, the eyes of
S. torvus are hairy (compare
http://farm3.stat...5520_o.jpg). So stick to
S. ribesii!
Regards, Sundew
Posted by Fred Fly on 09-05-2014 20:53
#4
No, it is again Epistrophe even mesonotum is (secondary) dull.
Posted by Sundew on 09-05-2014 22:57
#5
Ah - I see, the shape of the yellow bands is indeed different! In
Syrphus the middle part of the bands is usually narrowed, so
Epistrophe fits better, though the bands should be more orange than yellow... The dullness of the mesonotum is vexing - once I posted a fly with a comparable mesonotum (
http://www.dipter...d_id=13355) that was identified as a
Syrphus. Some specimens of
Epistrophe and
Syrphus (and
Parasyrphus) might be quite difficult to tell apart!
Edited by Sundew on 10-05-2014 12:02