Gomes Costa, R., & Redaelli, D.C. 1949 Cochonilhas ou coccĂdeas do Rio Grande do Sul. [Cochineal or coccids from Rio Grande do Sul].. Revista Agronomica. Lisbon 10/12: 61-70.
Notes: Species discussed include Orthezia insignis, Pseudococcus brevipes, P. citri, P. comstocki, Trionymus minutus and Takahashia pendens.