Zc (4100) and Zc (4200) as hadrocharmonium

It is suggested that the recently reported charged charmoniumlike resonance Z(c) (4100) and the previously observed Z(c) (4200) are two states of hadrocharmonium, related by the charm quark spin symmetry in the same way as the lowest charmonium states eta(c) and J/psi Namely, the Z(c)(4100) is (dominantly) the eta(c) embedded in a light-quark excitation with quantum numbers of a pion, while the Z(c) (4200) is a similar four quark state containing J/psi instead of eta(c). It is argued that this picture suggests certain relations between the properties of the two exotic resonances and a distinctive pattern of their decays that can be tested experimentally. It is also pointed out that due to the presence of a spatially compact c (c) over bar charmonium the discussed exotic Z(c) states may be produced as resonances in the s channel in (p) over barp annihilation.