Thread subject: Diptera.info :: Phoridae - maybe impossible?
Posted by ebbek on 07-02-2023 15:04
From a malaise trap in south Sweden between 17 nov - 15 febr.
Edited by ebbek on 07-02-2023 15:04
Posted by ebbek on 07-02-2023 15:05
Posted by ebbek on 07-02-2023 15:06
Posted by Steve Scholnick on 07-02-2023 18:06
Do you have some in focus images of the legs, particularly the hind ones? Those would help as would knowing whether Rs was forked or not.
Edited by Steve Scholnick on 07-02-2023 18:06
Posted by ebbek on 07-02-2023 18:40
Thanks for respons! The wings are in bad condition but maybe you can se if Rs is forked?
Edited by ebbek on 07-02-2023 18:41
Posted by ebbek on 07-02-2023 18:42
Other wing here
Edited by ebbek on 07-02-2023 18:43
Posted by ebbek on 07-02-2023 18:44
And leg here. I hope it is good enough?
Posted by Steve Scholnick on 08-02-2023 01:03
You're welcome. I think the lack of setae on the tibiae suggests that your fly belongs in subfamily Metopininae rather than Phorinae. Rs is forked (links to some diagrams from Drawwing below)
RS not forked (=R4+5 present but not R2+3) http://www.drawwi...icera-wing
RS forked (=both R2+3 and R4+5 present) http://www.drawwi...nipes-wing
Another feature that might help someone more knowledgeable than me get you a genus ID would be the presence or absence of a "hair seam" on the hind tibiae. There might be a hair seam on your specimen but I can't really tell from your photo
: no hair seam https://bugguide....ew/2213688
: two dorsal hair seams on each hind tibia https://bugguide....ew/1618327
With luck, one of the experts will be able to take this further
Posted by Paul Beuk on 08-02-2023 08:22
Genitalia resemble those of Triphleba trinervis
(slightly turned when compared to the illustration in Disney's handbook). In that case there should be two pairs of strong setae on the scutellum (rather than an apical pair of strong setae and a lateral pair of hairs).
Posted by ebbek on 08-02-2023 13:29
The apical pairs of setae are very strong and the lateral pairs are about half as long but still strong as setae (and not slender hairs). I will see if I can make a photo of them - but not easy with these small flies.