Males
only; females are indeterminable.
1.
Hind tibia at middle with strong and long black ventral spine; 1.5-2.0. Fig.
196... monacanthusLoew
–
Hind tibia at middle without ventral spine ... 2
2.
Hind tibia at apex with thickening covered with bunch of bristly hairs;
1.25-1.5. Fig. 197
... spinigerellus (Zetterstedt)
–
Hind tibia just before middle with ventral brush of short black setae and
1 longer adjacent branched seta; 1.75-2.0. Fig.
195... nigricosta
(von Roser)