Thread subject: Diptera.info :: Muscidae, Helina sp.?
Posted by Robert Heemskerk on 23-10-2008 22:31
#1
hi flyforum,
We got this fly on a dutch flyforum, we are thinking a bit of Helina sp.?
It's a pitty there is no good shot of the third leg..
Suggestions and reactions are welcome!
yellow calypter
prescutellar ac
short frontal triangle(?)
arista plumose
posterior sitae(what I can see)
legs seems to be black
place: Amsterdam forest
date: 14-10-2008
Posted by Robert Heemskerk on 23-10-2008 22:31
#2
picture 2
Edited by Robert Heemskerk on 23-10-2008 22:31
Posted by Robert Heemskerk on 23-10-2008 22:31
#3
picture 3
Edited by Robert Heemskerk on 23-10-2008 22:32
Posted by Stephane Lebrun on 24-10-2008 19:54
#4
Difficult to say, the essential characters are not visible, but it should be either
Helina either
Mydaea. May be a close-up on radial node could help (Mydaea have setulae on both side of wings, Helina never on dorsal side).
Posted by Robert Heemskerk on 24-10-2008 22:20
#5
Oeps.. 'radial node'?, I've to search in my books where I can find these..
''May be a close-up on radial node could help (Mydaea have setulae on both side of wings, Helina never on dorsal side).''
It's not easy to be a partime amateur entomologists :|
Edited by Robert Heemskerk on 24-10-2008 22:26
Posted by Stephane Lebrun on 25-10-2008 10:13
#6
Sorry. The radial node is the place where R2+3 and R4+5 are merged, just before they fork.
I add a picture of a
Mydaea wing with the setulae visible to illustrate that.
Edited by Stephane Lebrun on 25-10-2008 10:14
Posted by Robert Heemskerk on 25-10-2008 11:21
#7
nicely illustrated Stephane!
I have cropped my picture by this part:
I don't see any setae
Edited by Robert Heemskerk on 25-10-2008 11:22