Vilar, J.M.D.S. 1952 Subsídios para o estudo dos Ceroplastes spp. (Insecta - Coccidae) de Portugal. II. [Background study of two Ceroplastes spp. (Insecta - Coccidae) from Portugal. II].. Broteria. Lisboa 21: 1-62.

Notes: Conclusion of a detailed study of C. rusci and C. sinensis.