Yet they adapt!
Well so much for the successful eaters theory of evolution.
Adaptation is the means of survival of all forms of life. The 'blueprints' for the 'forms' have always been there. We are spiritual beings descended into physical form. Our 'form' is 'mammal'. How successful that form will be remains in question.
The horsetail weed you can never quite manage to get out of your garden goes back some 350 mya. Similarly long petigrees can be found in horseshoe crabs and hagfish. But the hagfish may be related to all vertebrates as the earliest with its cartilage backbone. All kinds of insects are little changed for hundreds of millions of years. You just can’t improve on perfection, I guess.