Howard, C.W. 1908 The scale insects of citrus trees.. Transvaal Agricultural Journal 6: 265-277.

Notes: Aspidiotus hederae, Chrysomphalus aonidum, C. aurantii, Coccus hesperidum, Icerya purchasi, Lepidosaphes beckii, L. gloverii and Saissetia oleae are found on citrus in the Transvaal.