Journal of the Asiatic Society of Bengal Part II Natural Science 1903

In the larval and pupal stages they can be distinguished from both the Coceithe and Psyllida3 by the presence on the dorsal surface of the last segment of the abdomen of a triangular or subelliptical opening (also present in the adult) known as the vasiform orifice. [...] The caudal half of the dorsum is narrower than the cephalic half and the margin caudad is slightly incurred. [...] The adult female when laying eggs moves in the sement of a circle the leaf being whitened by the white meal from the undersurface of the abdomen. [...] The lingula projects almost half its length beyond the operculum the tip extending almost to the lower edge of the vasiform orifice. [...] Of the central double row of abdominal pores present in the pupa only the pair on the first and second segments present.