Kozarshevskaya, E.F., & Konstantinova, G.M. 1972 Records on pseudo-Californian scale.. Akademii Nauk SSSR Glav. Bot. Sad. Zashchita Rastenii Vreditelei i Bodez. 1: 42-46.

Notes: Quadraspidiotus ostreaeformis compared with Q. perniciosus; description; distribution; parasites.