Thread subject: Diptera.info :: Zeuxia sp.?
Posted by Rui Andrade on 24-07-2009 20:18
#1
Could this fly be a Zeuxia?
location: Barcelos, Portugal
date: 09/07/2009
Posted by jorgemotalmeida on 24-07-2009 20:20
#2
antennae conspicuous, also there are no rows of proclinate bristles, top cell stalked. I would go for Eriothrix..
Posted by Rui Andrade on 24-07-2009 20:38
#3
Thank you Jorge, I couldn't decide between those two genera.
Posted by ChrisR on 24-07-2009 21:33
#4
I think it is a
Zeuxia (at least not an
Eriothrix) - the mouth doesn't look projecting enough; the median vein petiole is quite long; the antennae still look quite short (barely as high as the gena); and the costal spine doesn't seem to be present.
Posted by Rui Andrade on 24-07-2009 21:39
#5
So I continue without seeing Eriothrix...strange:|. Thanks Chris;)
Posted by ChrisR on 24-07-2009 21:46
#6
Can I swap you some of my common, boring
Eriothrix rufomaculata for your wonderful, exotic
Zeuxia spp.?! :D ;)
Posted by jorgemotalmeida on 24-07-2009 21:47
#7
ChrisR wrote:
I think it is a Zeuxia (at least not an Eriothrix) - the mouth doesn't look projecting enough; the median vein petiole is quite long; the antennae still look quite short (barely as high as the gena); and the costal spine doesn't seem to be present.
hmm... I think I should be quiet on this specimen. :)
Posted by jorgemotalmeida on 24-07-2009 22:25
#8
at least... to me is not Zeuxia. no proclinate brisltes. But I might be wrong... Chris has reason that this fly is not an Eriothrix.
Posted by jorgemotalmeida on 24-07-2009 22:37
#9
unless the brisltes are broken :S
Posted by Rui Andrade on 24-07-2009 23:35
#10
ChrisR wrote:
Can I swap you some of my common, boring Eriothrix rufomaculata for your wonderful, exotic Zeuxia spp.?! :D ;)
I only have this Zeuxia, but I'll catch some for you if I see them again.:)
unless the brisltes are broken
There really are some broken bristles...
Posted by Rui Andrade on 27-07-2009 01:16
#11
Theo, when you have time, don't forget to give your opinion on this fly:)
Posted by Zeegers on 27-07-2009 16:56
#12
IT is not Eriothrix, since the eyes are bare (always hairy in Eriothrix).
Let's rethink: the calyptra look rather small, don't they ?
Are we sure it is not some Rhinophoridae like Phyto ?
Theo
Posted by Rui Andrade on 27-07-2009 20:13
#13
I think I'm seeing a well developed subscutellum (see the picture below).
I have been going through the Central Europe key and I haven't reached any conclusions. I arrive at the 2nd step and there, since the arista is bare we can rule out Zeuxia (right?). I continued, and in step 42 I reach a dead end. In the r4+5 the bristlets do not go up to half the lenght between the base and r-m (suggesting step 44). The thorax has 2 wide black longitudinal stripes, separated by an equally(?) wide, dusted space and the eyes are bare (suggesting step 43).:|
Posted by Zeegers on 27-07-2009 20:53
#14
No. Some Zeuxia have nearly bare arista, though not in Central Europe.
However, I don't see a strong costal spine.
IS the pic misleading or is it really missing ?
Check both wings in case it might be broken.
By the way, I agree, no Rhino
Theo
Posted by Rui Andrade on 27-07-2009 21:06
#15
See here the strong costal spine:
Left wing:
Right wing:
Posted by jorgemotalmeida on 27-07-2009 21:08
#16
this is increasing my curiosity on this Zeuxia! :|
Posted by Rui Andrade on 27-07-2009 21:37
#17
Me too:P
Posted by Zeegers on 28-07-2009 07:40
#18
The answer is really very simple, and in my mind for some time, but I really need to check some of these things
It is the male of Z. sicardi !
Marginals on syntergite 1&2, excavation incomplete, arista with short hairs only, eyes bare, ocellars strong, etc etc.
Theo
Theo
Posted by ChrisR on 28-07-2009 10:11
#19
In my ignorance I didn't doubt that it would be a
Zeuxia ... just goes to show that sometimes it is statistically better not to know how many thousands of other things it could have been! ;)
Posted by jorgemotalmeida on 28-07-2009 20:14
#20
Andrade caught the male...
I caught females :D
Posted by Rui Andrade on 28-07-2009 21:12
#21
Thank you very much Theo:D! It's new for Portugal, I think:)