Posticus: hinder.
Post-media: Ephemerida; an apparently distinct vein between media and Cubitus (Comst.).
Post-medial line: in Lepidoptera, = t.p. line: q.v.
Post-median: Diptera; those leg bristles situated above or behind the middle. Post-nodal cross-veins: in Odonata, the transverse veins between costa and radius 1, and radius 1 and media 1, from nodus to stigma, separating the post-nodal cells or spaces: = post-cubital cross-veins.
Post-nodal costal spaces: in Odonata, the cells below costal margin from nodus to stigma.
Post-nodal radial spaces: in Odonata, the cells between radius 1 and media 1, from nodus to outer margin.
Post-nodal sector: in Odonata, a longitudinal vein lying between media 1 and media 2 (Comst.): = ultra-nodal sector.
Post-oral: behind the mouth; those segments bearing mouth structures.
Post-pectus: the under surface of the meta-thorax.
Post-petiole: in Hymenoptera, that part of abdomen behind petiole. Post-retinal: the fibres arising from the facets of the compound eye and extending into the ganglionic plate.