Description: The coqui is a small often squat frog with expanded toe tips and frequently a light dorsal stripe. Adults may reach up to 50 mm. The coloration is generally a shade of brown. The hind feet lack webbing between the toes. In the Marianas it is most likely to be confused with the greenhouse frog (Eleutherodactylus planirostris) but its larger size and expanded toe tips should differentiate the two. The call is a loud “ko KEE” from which it gets its common name.
Biology: This frog does not undergo an aquatic tadpole stage. Eggs and juveniles are easily transported in the soil of ornamental plants, the probable origin on the population on Hawaii (Hawaii Department of Agriculture) and the individuals found on Guam.
Distribution: Native to Puerto Rico, the coqui has established itself on several other Caribbean islands and Hawaii. (IUCN red list 29 Oct 2012). Three individuals have been found on Guam, but none recently. The suspected origin of these animals is Hawaii where they are firmly established and can occur in deafening abundance. They are included in this book because they have shown themselves to be capable invaders that have already managed to make it to the Mariana Islands.