| Psyllids are generally monophagous or narrowly oligophagous with respect to their angiosperm hosts. |
| This is true for many insects that are oligophagous or monophagous on plants that contain characteristic chemicals. |
| Since most insects are monophagous or oligophagous, the distinctness of the odours of different plants often enables them to locate their specific hosts from a distance. |
| Acquisition of a native host-plant by an introduced oligophagous herbivore. |
| Rearing the oligophagous Cactoblastis cactorum on meridic diets containing different nonhost proteins. |
| Polyphagous insects eat many plants that are unpalatable to oligophagous or monophagous species, even though all these insects may receive the same sensory information about plant chemistry. |
