My apologies for the lack of a question, I was interuppted and never got back to edit my post.
This is actually an interesting article, though incomplete. I did not know of this observed phenomenon, and was delighted to add to my trove of knowledge. I would like to point out that Wikipedia is not the best source to use in research, but I will deal with this article on its merites.
First, this article actually disproves speciation:
Different species are always sterile, that is how we know they are different species, and not just different sub-types of the same species.there is little evidence of interbreeding (researchers have documented a 4-6% hybridization rate) suggests that this is occurring.
Second, although I am a believer that genetic drift would be the best evidence of speciation, this article points out that the drift is not consitent in any way. there are differences from year to year in the same poulation group, in other words, the same tree. http://www.genetics.org/cgi/reprint/119/2/445 I would expect that gentic drift would need some type of consistency to cause speciation.
Third, althoughsympatric speciation is not as controversial as it was in the 1980's, there is still much debate concerning its value and existence.
There have been ongoing experiments in laboratory settings using radiation to cause speciation in fruit flies. These studies are also augmented by studying fruit flies in natural environmnets, yet not onsce has anyone anounced evidence of speciation. Many theorists are moving away from evidence of speciation as proof of evolution because it is so hard to find. Juist something to think about.