The egg chorion of the Italian species of the genusElectrogenawas investigated using the scanning electron microscope (SEM). The eggs examined showed distinctive chorionic patterns.Electrogena grandiae, E. lateralisandE. zebratashowed attachment structures characterized by knob‐terminated coiled threads (KCTs). These structures were uniformly scattered over the egg surface inE. grandiae, while inE. lateralisthey differed in size and position. InE. zebrata,the attachment structures were of uniform size and formed a dense mat over the whole egg surface. In contrast, no specialized sculptures were found inE. fallaxandE. gridellii.The different chorionic patterns allowed specific identifications. The affinities and the taxonomic position of the species examined are discussed.