Denno, R.F., McClure, M.S., & Ott, J.R. 1995 Interspecific interactions in phytophagous insects: competition reexamined and resurrected.. Annual Review of Entomology 40: 297-331.

Notes: Abstract: An examination of 193 pair-wise species interactions, representing all major feeding guilds; provided information on the occurrence, frequency, symmetry, consequences, and mechanisms of competition; short-term induced changes in host-plant nutrition and allelochemistry mediate interactions between scale insects, for example, contemporaneous feeding by nymphs of Fiorinia externa significantly reduced the nitrogen available in young hemlock foliage, which in turn dramatically decreases the survival of the scale Nuculaspis tsugae.