Freitas, A.O., & Carneiro, H. 1949 Occorência e importancia econômica de Orthezia insignis Douglas. [Occurrence and economic importance of Orthezia insignis Douglas.]. Boletim da (Secretaria de) Agricultura, Industria e Comerci. 16: 117-123.

Notes: Description, Brazilian distribution, extended host list, discussion of associated symbiotic fungi.