sentences:  Its natural habitats are tropical moist montane forests, grasslands and streams.It was first described by the British biologist and herpetologist Arthur Loveridge in 1945 and is named in honour of the American ornithologist and explorer Rollo Beck who led the Whitney South Seas Expedition in the 1920s, collecting bird and other specimens from thousands of islands in the South Pacific.Beck's tree frog is a fairly large tree frog with a snout-to-vent length of between .