Bénassy, C. 1977 Sobre algunos coccidos diaspinos de los citricos (C. dictyospermi Morg.; L. beckii Newm.; U. yanonensis Kuw.). [On some diaspine coccids of citrus (C. dictyospermi Morg.; L. beckii Newm.; U. yanonensis Kuw.)].. Boletín del Servicio de Defensa Contra Plagas Inspección Fitopatología 3(1-2): 1-20.

Notes: [Seminar on biological control of scale-insects and aleurodids on citrus.: Seminario de lucha biologica contra cochinillas y aleurodidos de los citricos.] Three cochineal insects, harmful to citrus fruits, are analyzed. The biological and ecological aspects which can influence the population dynamics are studied on Chrysomphalus dictyospermi, Lepidosaphes beckii and Unaspis yanonensis. The accidental discovery of some auxiliary entomophagous insects from central China creates the challenge of understanding how to use them in combination with chemical controls. It is pointed out that, though biological control measures have proved very effective in the case of C. dictyospermi and L. beckii, no suitable natural enemies of U. yanonensis are at present available and chemical control measures continue to be necessary.