(Pensoft Publishers) The young of two new species and a genus of frog found to inhabit Sumatra’s rainforests have developed a unique ability to latch onto rocks in the fast-flowing rivers, using bellies crafted by evolution into ‘suction cups’. The herpetologists, who described the species in the open access journal Zoosystematics and Evolution, use their remarkable discovery to highlight the unique biodiversity of the island, which is under imminent threat due to rampant habitat modification an…