I think my fly is a Yellow Swarming Fly, Thaumatomyia notata . It is very small, struggling to be even 1/8" in length I would say.
This gives a tentative ID on the next link, as Chlorops pumilionis have similar markings on head and thorax. The pic on this site however doesn't quite match mine, the pattern between the eyes is much larger, and the abdomen, although difficult to see, looks darker.
http://www.gwydir.demon.co.uk/insects/acalyptratae.htm
There is a pic on the next link under Grass Flies which states Chlorops sp.?, this looks similar to mine, but enlarged I can see the abdomen looks darker.
http://www.gardensafari.net/english/remaining_flies.htm#scatophaga_stercoraria
The next link give some info on Thaumatomyia notata and it's range, there it's called a Carnivorous Fly.
http://www.zin.ru/annrep/2000/16.html
This calls it a Predatory Fly, with no other information.
http://www.maik.ru/abstract/enteng/0/enteng0911_abstract.pdf
Another image
http://popgen.unimaas.nl/~jlindsey/commanster/Insects/Flies/SpFlies/Thaumatomyia.notata.html
The diptera.info link has pics of the male and female of Thaumatomyia notata, if anything mine resembles the male but without seeing the marks on the back of the abdomen I couldn't be certain. The other marks do look to be very similar.
http://www.diptera.info/photogallery.php?album_id=10
My pics are perhaps not very large, but then the bug is tiny and without a lens/extra MPs to cope with it, impossible to get a larger image.
I can see on the back of my bug two dark stripes, with two dark spots near the tail end.
I thought if we couldn't pin it down to a particular species, perhaps just the Genus with 'sp.' would give a place for this, as well as a new Family for BF.
