A. M. VARELA, A. C. BELLOTTI, and J. A. REYES, “BIOLOGY AND ECOLOGY OF THE FLOURY LICE OF YUCCA Phenacoccus gossypii Townsend and Cockerell (Homoptera: Pseudococcidae)”, Rev. Colomb. Entomol., vol. 5, no. 1-2, pp. 9–15, Jun. 1979.