Sullivan, K.C. 1930 State Plant Division.. Biennial Report (Missouri State Board of Agriculture) 28: 51-59.

Notes: Scale species recorded include Pulvinaria innumerabilis, Chionaspis furfura, C. pinifolia, Eulecanium nigrofasciatum, Aspidiotus comstocki, A. perniciosus, Toumeyella liriodendri, Aulacaspis rosae, Chrysomphalus tenebricosus, Lepidosaphes ulmi, Gossyparia spuria, Lepidosaphes becki, Coccus elongatus, Chrysomphalus biformis, C. fiscus, Hemichionaspis aspidistrae, Pseudococcus nipae, Macrosiphum rosae and Aspidiotus forbesi.