Rothschild, M., von Euw, J., & Reichstein, T. 1973 Cardiac glycosides in a scale insect (Aspidiotus), a ladybird (Coccinella) and a lacewing (Chrysopa).. Journal of Entomology (A) 48: 89-90.

Notes: Cardiac glycosides in the body tissue of three different species of insects all feeding on Nerium oleander is recorded; Aspidiotus neri and Pseudococcus adonidum proved to be negative.