Thread subject: Diptera.info :: Little Wings?

Posted by victorengel on 15-03-2021 17:08
#1

Normally, I would expect to see halteres on a fly instead of a second pair of wings. But on this fly, it looks like a second set of wings. I don't think I got another view where halteres would be more apparent. If this is some other anatomical feature, what is it?

inaturalist-open-data.s3.amazonaws.com/photos/116023868/original.jpg

Posted by victorengel on 15-03-2021 17:13
#2

Dorsal view.
inaturalist-open-data.s3.amazonaws.com/photos/116066762/original.jpg

Posted by John Carr on 15-03-2021 18:17
#3

See wing figures on Manual of Nearctic Diptera page 30. There is a flap called the alula near the base of the wing which in this case is folded.

Posted by victorengel on 15-03-2021 18:43
#4

John Carr wrote:
See wing figures on Manual of Nearctic Diptera page 30. There is a flap called the alula near the base of the wing which in this case is folded.


Ahh, thanks. By folded, I guess you mean folded relative to the rest of the wing.