Quote Originally Posted by TomOfSweden View Post
I think it has more to do with the authors careful use of language rather than any personal convictions. Maybe your only seeing what you're looking for.
The author speculates on the possiblity od allotropic speciation, and indicates that if it happens, the lab experiments involving fruit flies would be the first step of that process.

Although, we can't be sure, these preference differences probably existed because selection for using different food sources also affected certain genes involved in reproductive behavior. This is the sort of result we'd expect, if allopatric speciation were a typical mode of speciation.
Although this is carefully couched in a scientific way, it is nonetheless speculation. IOf anyone is reading into this, it is you and all the others who are so anxious to believe in evolution that they accept even the flimsiest of evidence as proof.