I've been criticised for suggesting that some human species evolved in the space of a generation or two. This isn't the same thing, but appears to prove what scientists previously dismissed as impossible...
A new species of insect may have arisen in an evolutionary eye-blink as a result of cross-species mating. The discovery suggests that hybridisation - well known to be an important force in producing new plant species - may also be widespread in animals. Until now, it had been assumed that new animal species almost always arise by gradually splitting off from an existing lineage
