What is Trachycephalus quadrangulum?
{{italictitle}} {{Speciesbox | image = | status = | status-ref = | status_system = IUCN3.1 | taxon = Trachycephalus coriaceus | authority = (Boulenger, 1882) | range_map = |synonyms=*''Hyla quadrangulum'' (Boulenger, 1882) *''Trachycephalus quadrangulum'' (Ron, Venegas, Ortega-Andrade, Gagliardi-Urrutia, and Salerno, 2016) | synonyms_ref=<ref name=AMNH /> }} The '''Chocoan milk frog''' (''Trachycephalus quadrangulum'') is a [[frog]] that lives on the Pacific side of the [[Andes]] in [[Ecuador]] and [[Peru]]. Scientists have seen it between 20 and 350 meters above sea level.<ref name=AMNH>{{cite web|access-date=March 3, 2022 |publisher=American Museum of Natural History|journal=Amphibian Species of the World 6.0, an Online Reference |title=''Trachycephalus quadrangulum'' (Boulenger, 1882) |url=https://amphibiansoftheworld.amnh.org/Amphibia/Anura/Hylidae/Lophyohylinae/Trachycephalus/Trachycephalus-quadrangulum}}</ref><ref name=Amph>{{cite web|publisher=Amphibiaweb |author1= Andrea Varela-Jaramillo |editor1=Santiago R. Ron |url=https://amphibiaweb.org/species/8552 |date=March 3, 2018|language=es |title= ''Trachycephalus quadrangulum'' |access-date=March 1, 2022}}</ref> The adult male frog is 53.4 to 76.9 mm long from nose to rear end and the adult female frog is 60.5 to 80.8 mm long. The adult frog is brown or gray in color with a darker gray mark on its back. The mark is four-sided. Its head is wider than it is long.<ref name=Amph /> ==References== {{reflist}} [[Category:Frogs of South America]] {{Taxonbar|from=Q42013481}}