The soft-scales (Coccidae) are one of about 20 families of the s(, ale insect superfamily Coccoidea. The females are all sap-sucking and all 1100 known species are potential pests in agriculture, horticulture or forestry. This family is amongst the most poorly known although the third largest in the superfamily. This book discusses all known genera and redescribes and illustrates the adult females of the type species of about 160 soft scale genera
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