Britton, W.E. 1928 Entomological features of 1927.. Bulletin of the Connecticut Agricultural Experiment Station No. 294: 198-209.

Notes: Aspidiotus perniciosus mentioned as uncommon in nurseries; Toumeyella liriodendri, Lecanium corni, Asterolecanium variolosum, Physokermes piceae, Gossyparia spuria, Kermes sp., and Chionaspis pinifoliae.