Do polyphagous insects prefer specific plants and survive only a single host? or do they prefer to feed on various types of host for some reason?

I'm planning to research on Pochazia shantungensis(Hemiptera: Ricaniidae),one of the polyphagous insects. So, I collected the eggs, and have been rearing the nymphs with sunflower and bean. I...

29 May 2018 4,664 4 View