Acanthococcus mokanae González, Ramos & Caballero sp. nov. is described from specimens associated with Hibiscus sp. (Malvaceae) and Capsicum sp. (Solanaceae), in the departments of Atlántico and Córdoba (Colombia, South America). Uhleria araucariae (Maskell) is recorded for the first time in Colombia in association with Araucaria heterophylla (Salisb.) (Araucariaceae) and Cryptomeria japonica (Thunb. Ex L.f.) (Cupressaceae). A taxonomic key for eriococcids recorded from Colombia based on the external morphology of the adult female is provided. Key words: Araucariaceae, Cupressaceae, Felt scales, Malvaceae, Neotropics, Solanaceae