March flies

March flies

Observation - March flies - Southern Africa. Description: Many many of these flies were observed against walls, mostly 2-by-2 as on the photo. We have not searched for the flies on other substrates. They were strikingly obvious against the white back ground

Many many of these flies were observed against walls, mostly 2-by-2 as on the photo.
We have not searched for the flies on other substrates.
They were strikingly obvious against the white back ground