Step, E. 1929 . British Insect Life. T. Werner Laurie, Ltd. London 264 pp.
Notes: Species mentioned include Lecanium hesperidum, Newsteadia floccosa and Orthezia insignis.
Step, E. 1929 . British Insect Life. T. Werner Laurie, Ltd. London 264 pp.
Notes: Species mentioned include Lecanium hesperidum, Newsteadia floccosa and Orthezia insignis.