  We extend Zirnbauer's color-flavor transformation in the fermionic sector to
the case of the special unitary group. The transformation allows a certain
integral over SU(N_c) color matrices to be transformed into an integral over
flavor matrices which parameterize the coset space U(2N_f)/U(N_f)xU(N_f).
Integrals of the type considered appear, for example, in the partition function
of lattice gauge theory.
