Adult integumental morphology of the suborder Psocomorpha (Psocodea: 'Psocoptera') was examined, and homologies and transformation series of characters throughout the suborder and Psocoptera were discussed. These examinations formed the basis of the recent morphology-based cladistic analysis of the Psocomorpha (Yoshizawa, 2002, Zool. J. Linn. Soc. 136: 371–400).