This is a case of allopatric speciation. In this case lice from gorilla moved and solutes into two different species. So this is case of geographical speciation where species become apart from each other to an extent that they cannot interbreed. Solution This is a case of allopatric speciation. In this case lice from gorilla moved and solutes into two different species. So this is case of geographical speciation where species become apart from each other to an extent that they cannot interbreed..