Trupanea cf nigricornis - Trupanea bisetosa

Moved

Moved from Trupanea.

… Bob Biagi, 6 April, 2018 - 12:44am

If you're referring to Foote, I don't see it there.

I've shot a lot of fruit flies - this BTW is a female - but don't recall any with this wing pattern. (Small wonder!) What strikes me as unusual is what I'm calling a "four pane" configuration. Follow the outside edge of the wing from the body to where the large black area starts. The first mostly clear section contains the four panes.

I realize this probably isn't much help, but maybe someone else will check in. I believe there's a more comprehensive version of Foote - using line art instead of photos. At any rate, that source is dated.

… Ron Hemberger, 4 April, 2015 - 12:49am

Ron

What about your pictures of that species at http://nathistoc.bio.uci.edu/diptera/TrupaneaNigricornis.htm?

Looks pretty similar to me. At least Trupanea have the decency to have notable differences that don't require a microscope...

… James Bailey, 15 April, 2015 - 9:51pm

James, I don't know how much variation there is in these flies.

As I mentioned earlier, the "four pane" wing on yours is unusual. (I did look at the OC site before commented before.)Hopefully, an expert will comment.

… Ron Hemberger, 15 April, 2015 - 11:29pm

Fair enough

It does indeed seem there is an extra complete "square" marking. I notice your pictures show a really small spot in the place of the fourth square on mine, whereas some other bugguide images only show three squares and no trace of a fourth spot at all. Yes it will be interesting to hear the verdict on this one. It does look like it might be variation.

Interestingly only a portion of bugguide pictures show the black antennae the species was apparently named for.

… James Bailey, 15 April, 2015 - 11:31pm

Yours is a good, sharp photo with fine detail on the wings.

The only other thing that might aid in ID is knowing what plant you found it on. Note that I couldn't determine species from that, but possibly others could.

… Ron Hemberger, 15 April, 2015 - 11:53pm