Britton, W.E. 1931 Entomological features of 1930.. Bulletin of the Connecticut Agricultural Experiment Station No. 327: 461-473.

Notes: Insects mentioned include Aspidiotus perniciosus, Lecanium corni, Gossyparia spuria, Chionaspis pinifoliae, C. euonymi, Toumeyella liriodendri, Lepidosaphes ulmi, Phenacoccus acericola, Pseudococcus sp., and Diaspis carueli.