Thread subject: Diptera.info :: shiny black fly with big red eyes (muscid) and another one (lonchaeid?)

Posted by Sundew on 22-01-2008 00:11
#1

Hi,
This rather small fly I met several times (may be, not the same individual, but the same species, I suppose), and all my efforts to take good pictures gave more or less unsatisfying results. Nevertheless I show them here, as it might be a common species and well known to you.
All pics are from the Island of Usedom in August.
Regards, Sundew

Edited by Sundew on 22-01-2008 15:39

Posted by Sundew on 22-01-2008 00:12
#2

Here are pics from another day. (The white lines are spider silk.)

Edited by Sundew on 22-01-2008 00:13

Posted by Andre on 22-01-2008 00:40
#3

Lonchaeidae...

Posted by Paul Beuk on 22-01-2008 08:00
#4

Not Lonchaeidae but Muscidae.

Posted by Andre on 22-01-2008 09:40
#5

:o :(

Posted by Xespok on 22-01-2008 13:15
#6

Possibly a male Hydrotaea sp.

Posted by Kahis on 22-01-2008 13:40
#7

Hydrotaea ignava ?

Posted by Nikita Vikhrev on 22-01-2008 15:10
#8

I also think it is H.ignava

Posted by Sundew on 22-01-2008 15:37
#9

Wow - I wouldn't have expected that we came that close to even a species! You are all really great.
Now, funnily, I have some more pictures of a black shiny fly with red eyes that were next in my sequence of photoshooting of that day. At a first glance I thought they showed the same fly, but then I saw it sat on another leaf, was smaller, had more distant eyes, and the wing venation seemed to be less complex. So I'd like to show you this fly, too - perhaps this is a lonchaeid to comfort Andre?
Thanks for the first ID and in advance for the second, Sundew

Posted by Sundew on 29-01-2008 21:54
#10

Really no more comments? Now, does the last pic series show a lonchaeid, and how can I discriminate between black shiny muscids (above) and lonchaeids?
Sundew

Posted by Tony Irwin on 30-01-2008 01:31
#11

Yes, I think the last pictures show a lonchaeid. The muscid has bigger, more bristly legs, and there is a well-marked thoracic suture. Also its wings are more widely spread.
The lonchaeid has the appearance of a little old lady who doesn't want to cause any trouble. The Hydrotaea is full of confidence - ready for action. This is more obvious in the way they move. The lonchaeid will be rather slow and deliberate, the mucscid more jerky and "on edge".

Posted by Andre on 30-01-2008 14:26
#12

So sweet of you to try to comfort me... that thought alone comforts me well :)

PS: did you know there is a Syrphid genus, called Psilota, which looks a lot like Lonchaidae? Try to shoot that one in april/may ;)

Posted by Sundew on 30-01-2008 21:34
#13

Many thanks, Tony - this is an excellent description! I should be able to tell the little things apart now. And Andre is happy again, so all ends well with this thread.
Cordially, Sundew