ior pleon: the terminal segments of the abdomen.

Posterior pleopoda: the anal clasping legs of caterpillars: see planta.

Posterior stigmatal tubercle: on thoracic and abdominal segments of
caterpillars; varies in position from substigmatal to stigmatal posterior;
sometimes united to V: it is IV of the abdomen, II of the thorax
(Dyar).

Posterior trapezoidal tubercle: on the thoracic and abdominal
segments of caterpillars; subdorsal, posterior, always present,
rarely united with I: it is II of the abdomen,
lb of the thorax (Dyar).

Posterior veins: those separating the posterior cells.

Posterior wings: = secondaries: q.v.

Postero-dorsal: Diptera; applied to leg bristles at the meeting of the
dorsal and posterior face.

Postero-ventral: Diptera; applied to leg bristles at the meeting of the
ventral and posterior face.

Postfurca: an internal process of metasternum to which the muscles
of hind legs are attached.

Post-gena: the sclerite below occiput and behind gena in some
Orthoptera.

Post-gula: is situated at the extreme base of the underside of the head
in Dermaptera.

Post-humeral bristles: in Diptera, are usually two, inserted above the
dorso-pleural suture between the humeral callus and root of wing, on
the bottom of the presutural depression.

Postical vein: in Diptera, = 5th longitudinal (Meig.);
= media 3 (Comst.).

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.

Post-scutellum: t