Factual information presented in this article:
1) A unique fly from the Canary Islands, the robber fly, is found nowhere else.
2) They found that endemic species, such as the predatory robber fly (Promachus vexator), are more common in places that are bustling with many different species.
Now, if new species are only created by "Intelligent Design", why would there be this association?
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I totally agree with your first point that scientists have found any unusual species found only in a specific location.
I also agree with your second point that this fly has found an environment that is to its liking.
Your comment about "new species...only created by (ID)" is valid with an assumption.
That new species are actually new species and not variations of an existing creature.
I don't have all the answers concerning Creationism, Intelligent Design, or Evolution. That is why I am here.
To learn. Pleasure to talk with you.
If I may....
Virtually all "kinds" of critter are variations on some theme or the other.
Bear with me a moment for a thought experiment...
Cats, lions, cheetahs, leopards, tigers for instance are variations on the cattish theme. Let us start with a house cat and call it Proto-cat. Someone drops a bunch of uwanted Proto-cat kittens on an otherwise cat free island. The island has mice, birds, rabbits, trees and various plants.
Some of the Proto-kittens come up with a nifty pounce technique that nets them a great supply of delicious mice. When the young mama proto-cats take their young hunting, they learn pounce techniques. An odd mutation occurs that gives some of the population of pouncers tufted ears. Another occurs that enlarges the ear and enhances the ability to hear mouse scurrying feet. And, yet another occurs that shortens some of their tails.
Meanwhile.. the rest of the proto-cats eat whatever doesn't escape fast enough, but the mouse supply is diminishing because of the pouncers.
A pounce mutation occurs here, too, but there it doesn't last long because the other group of pouncer-cats is already more efficient due to those new ears. A whole lot of other mutations occur, but they don't have any effect on survival, like a pale stripe on the tails. Or they are damaging, which happens in both populations, pruning them a bit.
Can you see where this is going?
In the real world something like this can be seen in what is called ring-species.
If you want to follow up on this try:
http://www.actionbioscience.org/evolution/irwin.html