The montane butterflies of the eastern Afrotropics - Biogeography and Ecology of the Rain Forests of Eastern Africa - page 135

Figure 8 .1. Mountain areas in he Easten Afrotropics as used in the text.

from the idea that by far the most important mode
of speciaion is allopatric speciaion. This claim is
not substaniated. It may be true, but it is unwise
to exclude other modes of speciaion from the
start, especially parapatric speciaion involving

habitat change. If it occurred, it must have
resulted in a different distribuion patten.
As in cladisic biogeography we shall define
areas of endemism. An area of endemism is, in
principle, every area to which a taxon is restricted.