Sarkisov, R.N., & Mkrtchyan, L.P. 1981 [Digestive system of Ararat cochineal.]. Biologicheskii Zhurnal Armenii 34: 633-636.

Notes: [Summary also in Armenian]. The description of the digestive system of Porphyrophora hamelii is presented. The presence of the digestive canal at all development stages, including the stages at which the mouth organs are reduced and insect alimentation ends were shown.