Thread subject: Diptera.info :: Muscid, recalling Coenosia -> Helina?
Posted by Sundew on 12-02-2009 01:54
#1
Hi,
I suppose this one is to enlarge my
Coenosia collection. However, the leg colour does not seem to match
C. tigrina. Can you tell me more? (Habitat: my garden in June, as usual.)
Thanks, Sundew
Edited by Sundew on 12-02-2009 03:15
Posted by Sundew on 12-02-2009 01:54
#2
Some more pics.
Posted by Tony Irwin on 12-02-2009 02:24
#3
This looks to have four sternopleural bristles, so unlikely to be Coenosiinae - I think its more likely to be a
Helina species
Posted by Sundew on 12-02-2009 14:37
#4
I'm sorry - the thorax part in question is not well visible. Here are some enlarged pics; maybe, an expert's eye will see more.
Posted by Stephane Lebrun on 12-02-2009 20:17
#5
With this combination of characters I think it could be
Helina confinis.
Posted by Stephane Lebrun on 12-02-2009 21:13
#6
The first pictures were enough to show that were present 2 anterior setae on katepisternum, and if there are 2 anterior, there are also 2 posterior ones (combination in Helina is either 1+2 or 2+2 ant+post ks setae). ;)
Coenosia have only 3 ks setae, which are equidistant to each others (arranged in an inverted equilateral triangle).
Posted by Sundew on 12-02-2009 23:33
#7
That's higher maths... I've read about
Coenosia's bristle triangle meanwhile and shall focus my camera macrolens on the katepisternum in future (if the fly is willing) :D
Many thanks, Stephane.
Edited by Sundew on 12-02-2009 23:33