Pleurites: the sclerites into which the pleurum is divided.
Pleuron: the side of the thorax.
Pleuropodia: embryonic or temporary bands formed by the modified first pair of abdominal legs in many insects.
Pleurostict: lamellicorn beetles in which the abdominal spiracles are situated on the dorsal portion of the ventral sclerites.
Pleurum: = pleuron; plural, pleura; q.v.
Plexus: a knot: applied to a knot-like mass of nerves, or tracheae.
Plica: a fold or wrinkle: a longitudinal plait of a wing.
Plicate: plaited; folded like a fan.
Plications: folding,; applied to the folds on the hind wings of Orthoptera.
Plicipenna: = Trichoptera; proposed by Latreille.