We describe and compare the chorion morphology of three species of the genus Ascia and Ganyra. Their characterization and illustration include the main structural features of the egg: number and arrangement of longitudinal axes (short and long), and quantification of ribs or cells, protuberances, projections, and reminiscent ribs; the color and size are also described. We typify three egg models: ellipsoidal with protuberances exhibiting a grid of pores in Ascia, elongated or oblong ellipsoidal with laminar projections unciforms in Ganyra. Comparisons are made between the chorion features of different species and related genera (Glutophrissa and Leptophobia). We discuss their phylogenetic and taxonomic implications.