Posted by Andre Burgers on 03-10-2018 08:42
#6
Thanks again, John!
I found some perfect photos of both species, but I am not sure what black spot we are talking about to separate the two species.
https://diptera.info/photogallery.php?photo_id=10565
https://www.discoverlife.org/mp/20p?act=zoom&img=/DL/IM/I_HHGA/0002/640/Nephrotoma_ferruginea_m,I_HHGA277.jpg?449,208
And I include cropped photo of my specimen. Not perfect because I couldn't get any nearer.