Ctenarytaina spatulata Taylor, 1997 was introduced in Brazil in the 1990 in eucalyptus plantations. Due to the importance of the C. spatulata as an eucalyptus pest, this research was developed in order to study the external morphology of adults and nymphs, with special detail on the 5th instar nymphs. Considerable differences were observed among the nymphal instars, mainly in respect to size and characters of the antennae, the legs and the apex of the abdomen. The adult external morphology was presented with details of the wing veins, the characteristics of the legs, antennae and the genitalia.
Ctenarytaina spatulata; eucalyptus pest; morphology; Psyllidae
