Steinweden, J.B. 1948 Identification and control of orchid pests.. Orchid Digest May-June: 105-111.

Notes: Species mentioned include Diaspis boisduvalli, Coccus hesperidum, C. pseudohesperidum, Pulvinaria phaiae, Parlatoria proteis, Pseudoparlatoria parlatorioides, Lepidosaphes mackieana, L. machili, L. noxiae, Aspidiotus hederae and Chrysomphalus dictyospermi; chemical control recommendations.