Thread subject: Diptera.info :: Muscidae USA 2011-VI-19 (= Mydaea)

Posted by John Carr on 20-06-2011 17:38
#1
Sunbathing on a rock in forest, New Hampshire, USA June 19, 2011. Body length 7 mm.

Arista has long hairs, hard to see except in the full size pictures. I think what appears to be a pair of presutural acrostichals is in fact shadows of hairs on the head and this fly has none.

farm3.static.flickr.com/2771/5850648915_84f47ab096.jpg

(large size on Flickr)

farm6.static.flickr.com/5067/5852956439_02979393cf.jpg

(larger on Flickr)

farm4.static.flickr.com/3059/5852956451_d347095577.jpg

(larger on Flickr)
Edited by John Carr on 09-07-2011 19:54

Posted by neprisikiski on 20-06-2011 18:20
#2
Probably Mydaea?

Posted by John Carr on 20-06-2011 18:32
#3
Here's one more angle I forgot to link initially.

farm4.static.flickr.com/3259/5852956477_101caf7854.jpg

Posted by John Carr on 28-10-2012 16:59
#4
It is similar to a few American species of Mydaea but differs from them all. Prealar short rules out urbana, and it's a different color from those in the gallery. Frons 1/3 head width rules out neglecta (which may be a pale form of electa, which also looks different in the gallery). Fore tarsi not distinctly widened rules out discimana.