Posted by Sundew on 05-02-2008 22:13
#1
Hello,
These two I consider male and female of
Helophilus trivittatus. Is there any chance for a confusion? The facial stripe is yellow, and
H. pendulus and
H. hybridus do not have the white stripes (at least not touching ones) on the abdomen tip. However, I found no description of
H. affinis except that the hind margins of tergite 3 and 4 are not yellow. (Location is Island of Usedom in August.)
Thanks for confirmation, Sundew
Posted by Stephane Lebrun on 05-02-2008 22:17
#2
With yellow facial stripe, ther is no confusion possible (H. affinis with black stripe).
H. trivittatus male and female indeed, a large distinctive species.