  Mie theory is one of the main tools describing scattering of propagating
electromagnetic waves by spherical particles. Evanescent optical fields are
also scattered by particles and exert radiation forces which can be used for
optical near-field manipulations. We show that the Mie theory can be naturally
adopted for the scattering of evanescent waves via rotation of its standard
solutions by a complex angle. This offers a simple and powerful tool for
calculations of the scattered fields and radiation forces. Comparison with
other, more cumbersome, approaches shows perfect agreement, thereby validating
our theory. As examples of its application, we calculate angular distributions
of the scattered far-field irradiance and radiation forces acting on dielectric
and conducting particles immersed in an evanescent field.
