Description of fully inflated endophallus in someCassida Linnaeus (Coleoptera: Chrysomelidae: Cassidinae)

The fully inflated endophalli of Cassida denticollis Suffrian, 1844, C. prasina Illiger, 1798, C. sanguinolenta O.F. Müller, 1776, and C. viridis Linnaeus, 1758 are illustrated and described for the first time. The endophallus in these species is membranous, symmetrical and divided in three parts (basal, medial and apical). Borders between parts are indistinct, without strong constrictions. Fully inflated endophalli of these species show distinct differences in: shape of apical sclerite; possessing or lacking of basal sclerites; and shape and location of protuberances.