In this paper we express the
equivariant torsion of an Hermitian locally symmetric space in terms of geometrical
data from closed geodesics and their Poincaré maps.
For a Hermitian locally symmetric space Y and a holomorphic isometry g we
define a zeta function Zg(s) for ℜ(s) ≫ 0, whose definition involves closed geodesics
and their Poincaré maps. We show that Zg extends meromorphically to the entire
plane and that its leading coefficient at s = 0 equals the quotient of the equivariant
torsion over the equivariant L2-torsion.