Morphological and ultrastructural investigations of the male reproductive system in aphids: observations on Tuberculatus (Tuberculoides) eggleri Börner (Hemiptera Aphidoidea)

Investigations into the amphigonic reproductive mechanisms of species belonging to the Superfamily Aphidoidea are likely provide useful information on aphid reproductive biology. Therefore, a preliminary ultrastructural study of their reproductive system, of which almost nothing is recorded in the literature, could be opportune. Our objective was to increase our knowledge of the male reproductive system in aphids by studying the ultrastructure of the male genitalia of several species. In this study, Tuberculatus (Tuberculoides) eggleri Börner (Aphididae, Calaphidinae) is used to describe the general characteristics of the male reproductive system in aphids.