Picine: black, with a bluish oily lustre.
Pick: a chitinous maxillary structure in Psocidae.
Pieza: the combined biting and sucking mouth of the Hymenoptera.
Piezata: the Fabrician term for Hymenoptera.
Pigment: any coloring matter or material that gives a color appearance. { Scanner's comment: sic}
Pile: a hairy or fur-like covering: in Diptera, applied to thick, fine, short, erect hair, giving a surface appearance like velvet.
Pilifer or Piliger: a small sclerite at each side of the clypeus in Lepidoptera, resembling a rudimentary mandible.
Piliferous: with a covering of fine hair or pile.
Pillared eye: in Ephemerids, that type which is placed on a cylindrical stalk or process: = turbinate eye.
Pilous or Pilose: clothed with down, or dense pile: with long, sparse hair.
Pinnae: of posterior femur in jumping Orthoptera, are the oblique ridges running to the median line and somewhat resembling a feather.
Pinnate: feather-like; cleft, like the wings of Alucita: with markings resembling a feather: with stiff hairs or thorny processes occupying opposite sides of a thin shank.
Pinnatifid: divided into feathers, as when wings are cleft nearly to the base.
Pistazinus: yellowish green, with a slight brownish tinge [pale green with a little burnt sienna].
Plaga: a spot, stripe or streak of color; a longitudinal spot of irregular form.
Plaited: longitudinally folded or laid in pleats.
Plane: level, flat; applied to a surface.
Planipennia: applied to Neuroptera in which the wings are large and laid flat on the body wnen at rest; Sialidae, Myrmeleonidae, etc.
Planta -ae: the basal joint of the posterior tarsus in pollen gathering Hymenoptera: the soles of the posterior tarsal joints: the anal clasping legs of caterpillars.
Plantigrade: species that walk on the entire foot, not on the claws alone.
Plantula: a lobe of the divided tarsal pulvillus; one of the soles or climbing cushions of the foot: see arolium; pulviglus.
Plaques: the small leathery hemelytra in some Naucorids.
Plasma: the liquid portion of animal fluids and cells.
Plasticity: the capacity for being formed, moulded or developed.
Plate: any broad flattened piece or sclerite: = squame, in Coccidae.
Platelet: a little plate or sclerite of chitin in a membrane.