Thread subject: Diptera.info :: Alpine Syrphidae 2011-VI-6 and 2011-VI-22 (= ? Parasyrphus tarsatus)

Posted by John Carr on 31-07-2011 02:14
#1
In June, 2011 I saw two Syrphidae in the alpine tundra of Mount Washington, New Hampshire, USA. I think they are male (June 8) and female (June 22) of the same species.

They look like Syrphini but I can't tell genera apart.

farm4.static.flickr.com/3293/5854067635_64ab9e7737_o.jpg
farm3.static.flickr.com/2715/5854067651_ff8a841416_o.jpg

farm7.static.flickr.com/6021/5990593157_d3b3d7eba2.jpg
(Click for large size or view on Flickr)
farm7.static.flickr.com/6146/5990600713_9d2f576387_o.jpg
farm7.static.flickr.com/6005/5991165190_20316999f7.jpg
farm7.static.flickr.com/6012/5990588165_61d4dbf39c_o.jpg
Edited by John Carr on 16-12-2013 18:45

Posted by Fred Fly on 31-07-2011 06:55
#2
Looks like male and female of the same Syrphus but they do not run to species with Vockeroth's key to Canadian Syrphinae.
Piet

Posted by John Carr on 18-11-2011 00:15
#3
Could these be pale Parasyrphus tarsatus, a species known from Mount Washington? I don't have a shot of a male hind leg.

Other than that, Syrphus sexmaculatus is similar but should have bare eyes (vs. long hairs below here). S. attenuatus is similar but should normally have more yellow on the abdomen.