Abstract: Recent studies showed the crucial role of different aspects of phenotypic plasticity when organisms exposed to various environments. Presented study tested integrations among the phenotypic plasticities in fitness, morphological features and host choice behavior of the Aphis fabae genotypes exposed to two different host plants. Results indicated that different aspects of phenotypic plasticities in black bean aphid were not systemically affected by host plant conditions as these features have independent regulation. Host plant conditions affected types of phenotypic plasticities in a different way. However, particularly plasticity in ultimate rostral segment positively integrated with plasticity in fitness on novel host plant.