Posted by Fred Fly on 23-10-2017 19:59
#5
T. arrogans has in most cases near apex an anterodorsal and a posterodorsal bristle nearly side by side. In none of your pictures this part is clearly visible but my impression is that a posteriodorsal is not present. General coloration of wing and mesonotum as well as a simple row of anterodorsals on f3 is speaking for T. ferruginea.
Regards
Piet