Recently, Malaysian herpetologist Juliana Senawi was puzzled over an unfamiliar frog she had live-caught in swampland on the Malay Peninsula.
She showed the frog to Chan Kin Onn, a fellow herpetologist pursuing his doctorate at the University of Kansas.
They wondered - was this striking frog with an appearance unlike others nearby in the central peninsula an unidentified species?
Poring over records to find out, the researchers saw that a comparable frog had been collected in the area 10 years earlier, but it was written off then as a species from an Indonesian island.
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"The frog was originally confused with the Siberut Island Frog, which is a species that occurs on Siberut Island off the western coast of Sumatra, Indonesia, due to their similar appearance in colour-pattern," Chan said.
"Despite their similarities, we had a strong suspicion that the frog from Malaysia wasn't the Siberut Island Frog," Chan said.
Extensive genetic analysis performed in the lab of Rafe Brown, curator of herpetology at KU's Biodiversity Institute, determined whether the Malaysian frog was genetically distinct from its doppelganger on Siberut Island.
"We decided to call it 'Hylarana centropeninsularis' because it's currently only known from central Peninsular Malaysia," he said.
The finding was published the journal Herpetologica.