Phormia regina

Moved

… v belov, 28 June, 2009 - 5:53pm

Moved up to family level

Moved from screwworm flies back up to family level. Thanks Tony--if you don't know where to go from here, I certainly have not a clue! I'm really regretting not saving the specimen on this one.

… Cotinis, 20 May, 2008 - 10:21pm

Here's the problem

Whitworth's Key is detailed, so:
1] Setose stem vein - yes
2] either Chrysomya - hairy maggot flies - no, or go to 3
3a] Genal dilation yellow or orange - yes;
head with predominantly yellow vestiture - no
3b] Genal dilation usually black (?); head with predominantly black vestiture - yes

3a leads to Screworms and 2 other genera Chloroprocta and Compsomyiops. Your fly doesn't fit any of these.

3b leads room for flies with or without a black genal dilation, includes
Protophormia - 2spp., Phormia - 1sp., Trypocalliphora - 1sp., Protocalliphora - 28 spp.

Can't see enough details to decide if/where it fits.

… A.W. Thomas, 21 May, 2008 - 8:24am

this one needs rethinking

from Whitworth's 2006 Key
Can't be Cochliomyia as the thorax does not have dark stripes and the bend in vein M is not closer to wing margin than it is to the dm-cu crossvein as seen in

.
I can't figure out where to go from here.

… A.W. Thomas, 20 May, 2008 - 6:32pm

Moved

Moved from Blow Flies.

… Cotinis, 15 May, 2007 - 6:35pm

? Phormia

Phormia regina, the only Phormia in NA, has black cheeks (Gena) (another candidate for your Glossary); your fly seems to have the yellow or orange gena which would place it in Cochliomyia, 4 spp. in NA.

… A.W. Thomas, 15 May, 2007 - 5:36pm

I noticed that when I was key

I noticed that when I was keying this out.... but the only Cochliomyia I'm familiar with have a striped thorax... perhaps it's just a different species than I've seen.

… Joe, Entomologist (in training), 15 May, 2007 - 10:54pm