They are all re­lated

Down to Earth - - SCIENCE -

from Ja­pan and the US have com­pared gene se­quences from 300 species of ants and found that one-tenth of all ants be­long to just one genus, Phei­dole. The re­searchers used th­ese se­quences to con­struct a tree that shows when and where each species evolved into new species. At the same time, they scoured the aca­demic lit­er­a­ture, mu­se­ums around the world, and large data­bases to ag­gre­gate data on where all 1,200 or so Phei­dole species live on Earth, cre­at­ing a range map for each species. Their re­sults sug­gest that Phei­doles evolved the same way twice, once to take over the New World, and then again to take over the Old World. Pro­ceed­ings of the Royal So­ci­ety Se­ries B, De­cem­ber 24

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