Darwin's ringed worm lizardDarwin's ringed worm lizard is a species of amphisbaenian in the family Amphisbaenidae. It is endemic to South America.EtymologyThe specific name, darwinii, is in honor of English naturalist Charles Darwin.DescriptionDarwin's ringed worm lizard may attain a snout-to-vent length of.Distribution and habitatDarwin's ringed worm lizard is found in Argentina, Brazil, Paraguay, and Uruguay. The preferred natural habitat is grassland.Ecology and behaviorDarwin's ringed worm lizard is fossorial and oviparous.