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The species Phenacoccus manihoti found in the Llanos Orientales is reported for the first time in Colombia. The eco­logy and biology of the Mexican mealybug, Ph. gossypii was studied. The best method to maintain a colony of this mea­lybug is to raise it on potato developed under low light. The life cycle was studied on five cassava varieties and differen­ces were found in total developmental time, developmental time per instar, and size increase per instar. A search for natural enemies of the mealybug was done as a basis for a biological control program. Among the many parasites and predators found the most common parasite was Anagyrus sp. (Encyrtidae), and the more common predators were Coccinellidae Scymnus sp. and Coccidophilus sp., the Diptera Ocyptamus stenogaster and Kalodiplosis coccidarum, and the Neuroptera Chrysopa sp.

VARELA, A. M., BELLOTTI, A. C., & REYES, J. A. (1979). BIOLOGY AND ECOLOGY OF THE FLOURY LICE OF YUCCA Phenacoccus gossypii Townsend and Cockerell (Homoptera: Pseudococcidae). Revista Colombiana De Entomología, 5(1-2), 9–15. https://doi.org/10.25100/socolen.v5i1-2.10350
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