Classification
Tree [regio]Heteroptera [subordo]
Lygaeidae [familia]
Lygaeinae [subfamilia]
Paranysius [genus]
Paranysius fraterculus [species]
Paranysius fraterculus Horváth, 1895 contains the following taxa:
Paranysius fraterculus fraterculus Horváth, 1895 [subspecies]
Paranysius fraterculus nigrimontanus Popov, 1970 [subspecies]