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.
Plates: in Coccidae, the squames; q.v.: in male Homoptera, a pair of pieces following the last full ventral segment; usually preceded by a short piece, - the valve.