▁N .   cid ▁from ▁north - central ▁Mind ana o . ▁This ▁group ▁was ▁introduced ▁by ▁Martin ▁Che ek ▁and ▁Matthew ▁J ebb ▁in ▁a ▁ 2 0 1 3 ▁paper ▁that ▁also ▁included ▁the ▁formal ▁descri ptions ▁of ▁the ▁latter ▁two ▁species . ▁Before ▁this , ▁N .   mic ram ph ora ▁was ▁considered ▁an ▁out lier ▁or ▁species ▁of ▁uncertain ▁pla cement ▁that ▁did ▁not ▁fall ▁into ▁any ▁of ▁the ▁established ▁groups ▁of ▁Philipp ine ▁Nep enth es ▁( the ▁three ▁main ▁ones ▁being ▁the ▁N .   al ata , ▁N .   vent ric osa , ▁and ▁N .   v ill osa ▁species ▁groups ). ▁ ▁Nep enth es ▁ab g rac ilis , ▁N .   cid ▁and ▁N .   mic ram ph ora ▁are ▁un ited ▁by ▁aspects ▁of ▁pitch er ▁and ▁stem ▁morph ology ▁as ▁well ▁as ▁shared ▁habitat ▁prefer ences . ▁Che ek ▁and ▁J ebb ▁identified ▁seven ▁di agnostic ▁characters ▁that ▁they ▁used ▁to ▁define ▁the ▁group : ▁ ▁subm ont ane ▁habitat ; ▁st ems ▁ter ete ; ▁per ist ome ▁sl ender , ▁cyl ind rical , ▁ 0 . 8 – 2   mm ▁wide ; ▁per ist ome ▁rid ges ▁low , ▁about ▁ 0 . 1   mm ▁high , ▁incon sp ic uous ; ▁inner ▁edge ▁of ▁per ist ome ▁without ▁visible ▁teeth ▁( in ▁natural ▁position ); ▁lower ▁surface ▁of ▁lid ▁lack ing ▁a ▁bas al ▁r idge ▁and ▁append age ; ▁lid