  We report on an effective field theory (EFT) description of exotic quarkonia
as bound states on the spectrum of hybrid and tetraquark static energies. We
provide expressions for hybrid and tetraquark static energies in terms of
Wilson loops. The former have been computed in quenched lattice calculations
but the latter are yet unavailable. From the few simulations with dynamical
light-quarks we argue that the overall picture from hybrid static energies does
not change but additional states, such as heavy meson pairs, need to be
considered for a full description. In this EFT framework for quarkonium
hybrids, we report on recent results for mixing with standard quarkonium,
spin-dependent contributions, and semi-inclusive decays.
