Syrphid Fly - Syrphus vitripennis

Moved

Moved from Syrphus.

… v belov, 18 December, 2013 - 6:04am

Syrphus torvus has quite hair

Syrphus torvus has quite hairy eyes, so I don't think this is torvus. Do you have a shot of the front of the face? If the wings are trichose, this looks to be S. ribesii, but I am unfortunately not very confident on whether the wings are trichose or not.

If cell bm is bare for at least the first 1/4, then this could be S. vitripennis or S. rectus - depends on what color the hind femur is. If it is yellow on the basal half, then rectus; if black on the basal two thirds, then vitripennis.

… Kelsey J.R.P. Byers, 16 December, 2013 - 12:47am

Thanks Kelsey,I have added a

Thanks Kelsey,I have added a closeup of the face which conclude that it is probably not S. torvus, and a side view which show the black femur.. hope it will help with id..

… Richard Migneault, 16 December, 2013 - 7:54am

Looks like either ribesii (if

Looks like either ribesii (if the wing is trichose) or vitripennis (if cell bm is bare on the anterior 1/4 or more). Thanks for the extra images!

… Kelsey J.R.P. Byers, 16 December, 2013 - 2:15pm

I am not sure about the term

I am not sure about the term trichose, I assume that it is these very small microscopique hairs which are present on the wing. I have include a photo of cell BM (hope I have the good one) on which we can see these microscopique hairs..They cover all the surface of the wing except in BM an adjacent.

… Richard Migneault, 16 December, 2013 - 6:16pm

Richard, cette série d"images pour l'espèce

...sont tout à fait magnifiques!!

… Denis A. Doucet, 1 April, 2018 - 3:53pm

Merci Denis..

… Richard Migneault, 2 April, 2018 - 5:24am

Yes - you've got it right! T

Yes - you've got it right! Those are the tiny hairs we're looking for. Cell bm looks to be missing hairs on the front 3/4 or so (anterior = on the leading edge of the wing here), so this is Syrphus vitripennis (other areas of the wing do look bare as you say). Thanks for all the help - those are lovely images!

… Kelsey J.R.P. Byers, 16 December, 2013 - 6:19pm

Thanks so much for your help

Thanks so much for your help Kelsey, I assume someone will create a page as it is not in BG yet..

… Richard Migneault, 16 December, 2013 - 6:28pm