Identical animals may be completely different species?

From ScienceDaily (Apr. 24, 2009) —

Animals that seem identical may belong to completely different species. This is the conclusion of researchers at the University of Gothenburg, Sweden, who have used DNA analyses to discover that one of our most common segmented worms is actually two types of worm.

The result is one of many suggesting that the variety of species on Earth could be considerably larger than we thought.

"We could be talking about a large number of species that have existed undiscovered because they resemble other known species," says Professor Christer Erséus.

It also helps explain why, after centuries of indoctrination, so few people put much trust in conventional evolution theories.