Newstead, R. 1903 . Monograph of the Coccidae of the British Isles. Vol. 2. Ray Society London 270 pp.
Notes: An elaborate descriptive review amply illustrated, covering 52 non-diaspine British scale insects assigned to 24 genera in 6 subfamilies; keys to 19 genera and to species of multiple species genera. Critical review by T.D.A. Cockerell, in Science (n.s.) 19: 501-502, 1904.