Williams, F.X. 1931 . Handbook of the Insects and Other Invertebrates of Hawaiian Sugarcane Fields. [Printed by Advertiser Publishing Company] Honolulu, Hawaii 400 pp.

Notes: Species mentioned include Trionymus sacchari, T. boninsis, Pseudococcus brevipes, Ripersia radicicola, Pulvinaria iceryi, Dactylopius coccus, Aspidiotus sacchari, Tachardia lacca and Orthezia insignis.