Mkrtchyan, L.P., Sarkisov, R.N., & Sarkisian, S.M. 1979 [On the type of structure of the ovarioles in the Ararat cochineal Porphyrophora hamelii Brandt (Homoptera, Coccoidea, Margarodidae).]. Biologicheskii Zhurnal Armenii 32: 204-208.

Notes: Comparative study; noted significant differences in structure allowing distinction of similar ovarioles in a separate follicular-polytrophic type.