Some are monophages , being host specific and only found on one plant taxon , others are oligophages , feeding on a few plant groups .
Others again are less discriminating polyphages and feed on many species of plant .
Some are monophages , being host specific and only found on one plant taxon , others are oligophages , feeding on a few plant groups , while others again are less discriminating polyphages and feed on many species of plant .