  We have investigated the pattern formation in systems described by the
nonlocal Fisher--Kolmogorov--Petrovskii--Piskunov equation for the cases where
the dimension of the pattern concentration area is less than that of
independent variables space. We have obtained a system of integro-differential
equations which describe the dynamics of the concentration area and the
semiclassically limited distribution of a pattern in the class of trajectory
concentrated functions. Also, asymptotic large-time solutions have been
obtained that describe the semiclassically limited distribution of a
quasi-steady-state pattern on the concentration manifold. The approach is
illustrated by an example for which the analytical solution is in good
agreement with the prediction of a numerical simulation.
