  We propose a new approach to investigation of quantum manifestations of
classical stochasticity (QMCS) in wave functions structure, which can be
realized in potentials with two and more local minima. The main advantage of
the proposed approach is the possibility to detect QMCS in comparison not
different wave functions, but different parts of the same wave function.
Efficiency of the approach is demonstrated for two potentials: surface
quadrupole oscillations (QO) and lower umbillic catastrophe (UC) $D_5$.
