1	Small species (~ 56.0 mm or less); (tegmina) the radial bend occurs before the splitting of the first radial and the radial sector, therefore the radial sector is straight; the radius and medial crossvein is present on the radial bend at or before the splitting of the first radial	2
–	Larger species (> 56.0 mm); (tegmina) the bend in the radial vein happens on the radial sector after the splitting of the first radial from the radius; the radius and medial crossvein occurs after the splitting of the first radial, instead originating on the radial sector	3
2	Profemoral exterior lobe broad, with a slight recurve, giving the exterior angle an acute or right angle; mesofemoral interior lobe with the widest portion on the proximal half	N.chitoniscoides comb. nov.
–	Profemoral exterior lobe narrow, smoothly arcing from end to end with the exterior angle distinctly obtuse; mesofemoral interior lobe with the widest portion on the distal half	N.daphne sp. nov.
3	(Tegmina) there is a wide gap between the media and cubitus veins which persists throughout their entire length, this gap is several times wider than a single vein width; profemoral exterior lobe proximal margin is straight, not recurved	N.keyicum comb. nov.
–	(Tegmina) the media and cubitus veins run side by side throughout the entire length either touching or no farther than a single vein width apart; profemoral exterior lobe proximal margin is recurved, not straight	4
4	Prescutum width more than two times the length; mesofemoral exterior lobe broad, notably wider than the mesofemoral shaft	N.suzukii comb. nov.
–	Prescutum width less than two times the length; mesofemoral exterior lobe as wide as or thinner than the mesofemoral shaft	5
5	No protibial exterior lobes and no mesotibial exterior lobes, exteriors simple	N.frondosum comb. nov.
–	Distinct protibial exterior lobes and mesotibial exterior lobes, present as small spurs	N.asekiense comb. nov.