Abstract: The morphology and taxonomical characteristics of the adult,egg,larva and pupa of Pealius mori (Takahashi) were studied. This paper deals with the length, body colour, antenna, ocelli, oculi, mouth parts, wings, legs and genitalia of the adult. The shape, size, body colour, the seta of body margin, antenna, gnathite, legs, vasiformorifice, operculum, lingula and furrow on each instar larva and pupa were described in great detail. The morphological characters of the egg were also given. The differences in morphological features between Pealius mori (Takahashi) and Bemisia myricaeKuwana were compared.

Key words: Pealius mori (Takahashi), Bemisia rnyricae Kuwana, morphology, taxo- nomical characteristics