sentences:  Atelopus varius
  
  Atelopus varius, the Costa Rican variable harlequin toad or clown frog, is a small Neotropical true toad from the family Bufonidae (Crump 1986).Once ranging from Costa Rica to Panama, "A. varius" is now listed as critically endangered and has been reduced to a single remnant population near Quepos, Costa Rica (rediscovered in 2003) and has only relict populations in western Panama (IUCN).