Nocturnal: species that fly or are active at night.
Nodal furrow: in Odonata; a transverse suture, beginning at a point in costal margin corresponding to the nodus, and extending toward inner margin.
Nodal sector: in Odonata; = media 2 (Comst.): arises from upper sector of arculus near nodus and extends to outer margin.
Node: a knot or knob: in the plural refers to the small segment or segment between thorax and main portion of abdomen in ants.
Nodiform: in the form of a knot or knob.
Nodicorn: with antennae that have the apex of each joint swollen.
Nodose -us: knotted or with knots; a body with one or more knotted parts a sculpture with almost isolated knots.
Nodule: a little knot, lump or node.
Nodulose -us -ate: with small nodes or nodules: a surface sculpture of knots or links, connected by an undulating line.
Nodus: in Odonata; a stout, oblique, short vein at the place where the anterior margin of the wings is sometimes drawn in.