Individual, Species, Appearance, Reality

According to Schopenhauer, the World as Will is distinct from the World as Representation, and Individuals inhabit only the latter.  It follows that descriptive Egoism is false.  For, whatever motivates an Individual is a principle that transcends Individuality, or, put otherwise, since the 'self' is a mere appearance, then so, too, is 'self'-interest.  Now, the Egoist can easily respond that Individuation, and, therefore, Selfhood, is real.  Still, that rejoinder does not consider that a clear demonstration of the mere appearance of an Egoist experience is that of any phase of any of the reproductive processes, e. g. sexual excitation, which, though localized in an Individual, is a Species-principle.  So, if one such experience is mere appearance, then, as follows from Schopenhauer's model, any might be.