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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Flies (Diptera) » Acalyptratae » Vinegar Flies (Drosophilidae) » Drosophila » affinis species group (Drosophila affinis species group)
Photo#199128
Rotting tree dweller 2 - Drosophila - female
Copyright © 2008 John F. Carr

Rotting tree dweller 2 - Drosophila - Female
Newton, Middlesex County, Massachusetts, USA
July 8, 2008
Size: 2.5 mm
Near the fly below; this one is bigger.
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Contributed by John F. Carr on 8 July, 2008 - 6:29pm
Last updated 16 July, 2008 - 12:02pm

Moved
Moved from Drosophila.
… John F. Carr, 16 July, 2008 - 12:02pm login or register to post comments

Drosophila, affinis group
Consistent with an affinis group female. The other possibility might be funebris group, but it looks like it has six rows of acrostichal hairs, not eight. A female would be slightly larger than the male.
… MA Ebbert, 13 July, 2008 - 12:50am login or register to post comments

 
Sharpened
I sharpened the picture a little so it might be easier to count hairs now. There is a slightly larger version on my Flickr page: http://www.flickr.com/photos/31715949@N00/2651535536/sizes/o/.
… John F. Carr, 13 July, 2008 - 9:36am login or register to post comments

 
Drosophila affinis
Nice! You can see those six rows nicely, so I'll go with affinis group female (still leaves you with four possibilities, sorry - you'd need her male offspring to nail it down).
… MA Ebbert, 16 July, 2008 - 11:40am login or register to post comments

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