Dziedzicka, A., & Madro, D. 1999 Three species of scale insects (Coccinea) new to Polish greenhouses.. Acta Biologica Cracoviensia: Series Zoologia 41: 15-18.

Notes: Coccus perlatus, Carulaspis juniperi and Rhizoecus dianthi are briefly described, illustrated and compared to similar species. Brief biological notes and host plants are provided.