No, it means that in this region, praying mantises that randomly were a little pinker were more successful at reproducing than other praying mantises.
They may have just been 0.01% more successful at reproducing, but over millions of years that’s enough that those pink genes are now in the entire population.
(Edit: in fact, NONE of the ancestors survived. They died like all the other praying mantises. But I’m guessing that wasn’t your point…)
