The perspective I will adopt in this chapter is that of a synoptic evaluation of insect pest models, with the view of focusing more narrowly on the specific attributes of rangeland systems that offer both challenge and promise for successful modeling applications. In order to develop this perspective, I will first provide an evaluation of modeling contributions in Integrated Pest Management (IPM) research. Then I compare the attributes of more intensively managed agricultural systems to those of rangeland systems. Next, the implication of these attributes for modeling rangeland systems will be discussed. The final section provides a brief summary of the previous sections.