picture the morphology of an average soapberry bug from a rain tree population and compare it to the morphology of its new food
source, balloon vine seeds. This average bug was taken from a population containing a range of sizes. Are large, small or average bugs more likely to have relative fitness on the new food source?
The relative fitness on the new food source is bigger in large bugs since they have longer beaks that can reach seeds inside the seedpod of the balloon vine. These seedpods are bigger than seedpods of tree vines and large bugs are thus favored, meanwhile average size and small soapberry bugs cannot reach the seeds.