Pseudovary: the organ or mass of germ cells of an agamic insect.
Pseudo-vitellus: a cellular organ in Aphididae, supposed to replace the absent Malpighian tubules.
Psocoptera: = Corrodentia; q.v.
Psychogenesis: the origin and development of social and other instincts and habits. Pterodicera: with wings and two antenna.
Pterogostia: the wing veins.
Pterogostia: referring to the wing structure. Pteropega: wing sockets or cavities into which the wings are inserted.
Pteropleura: in Diptera, are situated below the base of the wings behind the meso-pleural suture: = the posterior lateral plate of meso- thorax of Lowne; the episternum of meso-thorax of Hammond.
Pteropleural bristles: in Diptera, are inserted on the pteropleura.
Pterostigma: a thickened, opaque spot on the costal margin of a wing, near its middle or at end of the radius: = bathmis, and see stigma.
Pterotheca: that part of the pupa that covers the wings.