3 literature references for Pterasthenia albata (Adams, 1965):

Author: Eastop & Hille Ris Lambers
Year: 1976
Title:
Source: Survey of the world’s aphids, Dr. W. Junk, The Hague 573 pp
Author: Remaudière, G. & M. Remaudière
Year: 1997
Title:
Source: Catalogue of the World’s Aphididae, INRA, Paris 473 pp
Author: Adams
Year: 1965
Title: A new aphid genus from Central Africa
Source: Proceedings of the Royal Entomological Society of London Series B, Taxonomy 34(7):83-88