Posted by BubikolRamios on 25-11-2009 11:12
#1
15.06.2008, body size 15 mm
I belive this(eristalis pertinax):
differs from the one in question -->rear end pattern, or this is gender thing?
Edited by BubikolRamios on 25-11-2009 11:21
Posted by Andre on 26-11-2009 11:41
#3
Indeed, all three are
tenax. Unique for
pertinax is, in having the front and middle tarsae all yellow. So this is not
pertinax. Unique for
tenax are the two 'bands' of hairs running over the eyes vertically. In fact, they are two areas where the hairs grow a lot closer to eachother than on the rest of the eyesurface. Sometimes it can be less clear to see, but in many cases it's easy. The abdomen of
tenax can be with large reddish-yellow spots, to almost completely dark. The extension of these markings is usually (but not always) larger (reaching tergite 3) in the males, like you can see on your pictures.
Edited by Andre on 26-11-2009 11:44