Priore, R. 1963 Studio morfo-biologico sulla Rodolia cardinalis Muls. (Coleoptera, Coccinellidae). [Morphology and bionomics of Rodolia cardinalis Muls. (Coleoptera, Coccinellidae).]. Bollettino del Laboratorio di Entomologia Agraria 'Filippo Silvestri'. Portici 63-198.
Notes: Detailed and meticulous description and illustration of this predator of Pericerya purchasi and Gueriniella serratulae.