Thread subject: Diptera.info :: Small swedish fly (Geomyza balachowskyi ?)

Posted by ebbek on 05-02-2018 19:58
#1

Thankful for any ID help! Long hairs on arista and body length 5 mm. From south Sweden 20 july.

Krister

Edited by ebbek on 05-02-2018 21:04

Posted by ebbek on 05-02-2018 21:04
#2

Maybe Geomyza balachowskyi?

Posted by Jan Willem on 05-02-2018 22:26
#3

It's very likely indeed a female of Geomyza balachowskyi. However I can't entirely rule out G. hackmani. In that species the abdomen is normaly much darker (but sometime banded like in G. balachowskyi). Also the post-scutellum is normally darker in G. hackmani (but exceptions are known.

Posted by ebbek on 06-02-2018 08:43
#4

Many thanks Jan! How about G. majuscula, can that species also have a banded abdomen like this?

Krister

Posted by Jan Willem on 06-02-2018 21:10
#5

I've never seen Geomyza majuscula with a banded abdomen. But the wing markings in G. majuscula are more similar to those of G. tripunctata. G. martineki is more similar to G. balachowskyi/G. hackmani. But also for this species (G. martineki) I have never seen specimens with a banded abdomen.

Posted by ebbek on 06-02-2018 21:59
#6

I understand, thanks again!

Krister