Pemphigus cylindricus Zhang 1981

Zhang 1981. Homoptera: Aphidoidea. Zhongguo Kexueyuan Qingzang Gaoyuan Zonghe Kexue Kaocha Dui. [The Series of the Comprehensive Scientific Expedition to the Qinghai-Xizang Plateau.] Xizang kunchong [Insects of Xizang = Tibet.], Volume 1. Science Press, Peking, 1981: 165-166. Chapter pagination: 233-282