Cabido Garcia, R. 1949 [Contribution to the study of the systematics, morphology, biology and ecology of the yellow scale (Chrysomphalus dictyospermi Morg.).]. Boletim da Junta Nacional das Frutas 9: 374-465.

Notes: [Original title: Contribuiçao para o estudo da sistematica, morfologia, biologia e ecologia da cochonilha amarela (Chrysomphalus dictyospermi, Morg.).] Reviews the classification, morphology, host relations, and distribution; considers the ecological conditions favorable to Portuguese development.