Abstract
The paper concerns with characteristics of a thorax morphological structure Cacopsylla Ossiannilsson, 1970 species, referring to an analysis of five species classified in the past in three subgenera. The structure of the sternites, tergites and pleurites of all the parts of the thorax was studied by a scanning microscope. Descriptions of particular elements building up thorax plates, their shape, size and links as well as a course of all the clefts and sulcus are provided. The study of thorax morphology of Cacopsylla species suggests that the thorax morphology is relatively homogenous within a genus.