Thread subject: Diptera.info :: Muscoidea USA 2011-IX-10 (= Eutrichota)
Posted by John Carr on 12-09-2011 00:45
#1
Several of these flies landed around me as I sat on a bench. They were especially attracted to my leather shoes.
Massachusetts, USA September 10, 2011.
(Click to enlarge or view
on Flickr.)
(Click to enlarge or view
on Flickr.)
Edited by John Carr on 24-05-2012 15:51
Posted by Stephen R on 12-09-2011 10:15
#2
I think Anthomyiidae. Perhaps Pegomya is possible - I can't see cruciate interfrontals - but I'm just guessing!
Posted by John Carr on 12-09-2011 14:40
#3
Here are the wing base and head of a different individual. They have a paler tip to the scutellum, not really obvious because the area is small and out of focus here.
Edited by John Carr on 12-09-2011 14:42
Posted by John Carr on 12-09-2011 23:43
#4
Better picture of head from another fly seen today in the same location.
(Click for large or view
on Flickr.)
Posted by Stephen R on 13-09-2011 11:45
#5
In the last shot I see some fine crossed interfrontals, which, in the British key, rules out
Pegomya. I hope someone else can help.
Posted by John Carr on 13-09-2011 15:43
#6
I have the upper side of the thorax of another similar fly.
(
On Flickr)
Posted by John Carr on 17-05-2012 00:33
#7
I have captured one of these flies. They are very common again this week. If there is anything I could shoot to help ID I'll try (I have no microscope). I can send somebody a male.
Posted by Stephen R on 17-05-2012 11:18
#8
Perhaps Michael Ackland would look at a specimen for you? It's all in the genitalia, and I have no information about American anthos.
(Looking again at the frons, I think the setulae I saw are probably on the parafrontal, so not interfrontals after all.)
Posted by John Carr on 24-05-2012 15:50
#9
With an added photo of the male parts of a male Michael Ackland says
Eutrichota.
Posted by John Carr on 02-06-2012 14:55
#10
The last photo above is of a specimen identified by Michael Ackland as
Eutrichota affinis (Stein).
