Crossover and Coexistence of Quasiparticle Excitations in the Fractional Quantum Hall Regime at nu >= 1/2

New low-lying excitations are observed by inelastic light scattering at filling factors nu = p/(phip+=1) of the fractional quantum Hall regime with phi = 4, Coexisting with these modes throughout the range nu = 1/3 are phi = 2 excitations seen at 1/3. Both phi = 2 and phi = 4 excitations have distinct behaviors with temperature and filling factor. The abrupt first appearance of the new modes in the low energy excitation spectrum at nu ~ 1/3 reflects a marked change in the quantum ground state on crossing the phi = 2 -> phi = 4 boundary at nu = 1/3.