 Species restricted to a specific habitat in relatively remote regions, infrequently visited by biologists looking for reptiles, are often virtually unknown and rarely recorded.In a review in 2017, it was found that 15 anole species only were known from their holotype.These may truly be rare and seriously threatened, as the proboscis anole, a species that only was known from a single specimen collected in 1953 until it was rediscovered in cloud forests of Ecuador in 2004.