Thread subject: Diptera.info :: Muscidae ID -> Muscina stabulans
Posted by Carnifex on 15-08-2019 21:19
#1
Hi,
this 5mm long fly was attracted to a beer bait in a garden in Vienna. I was looking for the 'Phaonia bristle', but I am not sure if it is present here or not.
Edited by Carnifex on 20-08-2019 22:05
Posted by Nikita Vikhrev on 16-08-2019 13:04
#2
Phaonia bristle presents, but it is Muscina stabulans
Posted by Carnifex on 16-08-2019 13:26
#3
Thank you Nikita,
at the same time, there were several other
Muscina (
stabulans/levida), but this fly was much smaller than the others. Is there such a variety in body sizes?
Edited by Carnifex on 16-08-2019 13:26
Posted by Nikita Vikhrev on 16-08-2019 14:57
#4
Well, probably when she was larva, she feeded bad...
Posted by johnes81 on 16-08-2019 15:01
#5
very strange because it only has three stripes on the mesonotum. I am used to seeing four stripes with two prominent median stripes. She is strange.
Maybe she drank too much beer :o
Posted by Carnifex on 17-08-2019 19:01
#6
So what you say, John, is that you agree with the ID, only that it is an unusual individual - or do you suggest to take a closer look at that fly?
Posted by johnes81 on 19-08-2019 12:59
#7
Hello Lorin,
I hope that you are having a good day.
I am stunned by the dusting on the thorax. I've not seen this on M. stabulans. I have various angles but always see two vitta. Perhaps you are a much better photographer and captured the right photo to show a strong dusting. The pale areas could become dark (dusting) while the dark areas become pale. I am not a Muscidae expert so i cannot disagree with M. stabulans. M. angustifrons is very similar but also very rare and associated with fungus. I'm going to try to find a stabulans with such dusting. I'm curious why i have not seen this before ...
Best wishes,
John
Posted by Carnifex on 20-08-2019 08:47
#8
I can exclude
M. angustifrons, the apical femora are reddish and the basicosta is yellow. Also, the weird striping is just a light effect, viewing it from a different angle it looks like this, so never trust a photo :-)
Posted by johnes81 on 20-08-2019 13:55
#9
I decided to look at my photos of levida, stabulans and prolapsa. I only see the dusting from the front when the fly is alive. Your fly is clearly dead, so the dusting is visible from behind. Try it on a live specimen. I find this interesting. I like to document dusting (light plays a role but it is really dusting that you are seeing not an effect of light), I also have Phaonia turgoriorum scutellum with two different colors based upon angle (dusting). I find dusting to be fascinating and i like to document it.
I will attach a photo depicting the dusting from the front of M. levida (left) and M. stabulans (right).
I only photograph live flies, so this is nice to know.