Knowlton, G.F., & Smith, C.F. 1936 Rose insects.. Proceedings of the Utah Academy of Sciences, Arts, and Letters 13: 263-267.

Notes: Species listed include Orthezia insignis, Pulvinaria vitis, Lecanium corni, Lepidosaphes ulmi, Aulacaspis rosae, Aspidiotus camelliae, Aspidiotus juglans-regiae and Aspidiotus perniciosus.