Trachycephalus quadrangulum (Boulenger, 1882)
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Open encyclopedia reference
Trachycephalus quadrangulum, the Chocoan milk frog, is a species of frog in the family Hylidae. It is endemic to the Pacific slopes of the Andes in Ecuador and Peru. Scientists have seen it between 20 and 350 meters above sea level.
The adult male frog measures 53.4 to 76.9 mm in snout-vent length and the adult female frog 60.5 to 80.8 mm. The adult frog is brown or gray in color with a four-sided darker gray mark on its back. Its head is wider than it is long.
Wikipedia contributors, Trachycephalus quadrangulum; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T18:54:13.932598+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Trachycephalus quadrangulum (Boulenger, 1882)
- Name authority
- (Boulenger, 1882)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Amphibia
- Order
- Anura
- Family
- Hylidae
- Genus
- Trachycephalus
- Extinction status
- Recorded extant
Classification family tree
Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- megaclassTetrapoda
- classAmphibia
- orderAnura
- familyHylidae Rafinesque, 1815
- genusTrachycephalus Tschudi, 1838
- speciesTrachycephalus quadrangulum (Boulenger, 1882)
Close classified relatives
These entries share the source’s genus, Trachycephalus. They are not necessarily the closest relatives established by molecular evidence.
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Hyla modesta (Taylor & Smith, 1945) (Taylor & Smith, 1945) | synonym |
| Hyla nigropunctata Boulenger, 1882 Boulenger, 1882 | synonym |
| Hyla paenulata Brocchi, 1879 Brocchi, 1879 | synonym |
| Hyla spilomma Cope, 1877 Cope, 1877 | synonym |
| Phrynohyas corasterias Shannon & Humphrey, 1957 Shannon & Humphrey, 1957 | synonym |
| Phrynohyas inflata (Taylor, 1944) (Taylor, 1944) | synonym |
| Phrynohyas latifasciata Duellman, 1956 Duellman, 1956 | synonym |
| Phrynohyas modesta (Taylor & Smith, 1945) (Taylor & Smith, 1945) | synonym |
| Phrynohyas spilomma (Cope, 1877) (Cope, 1877) | synonym |
| Acrodytes inflata Taylor, 1944 Taylor, 1944 | synonym |
| Acrodytes modesta Taylor & Smith, 1945 Taylor & Smith, 1945 | synonym |
| Hyla quadrangulum Boulenger, 1882 Boulenger, 1882 | synonym |
| Acrodytes spilomma (Cope, 1877) (Cope, 1877) | synonym |
Source literature & publication evidence
References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.
- https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=1104309 Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references
Origins, evidence & remaining research
Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.
Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.
Dataset citation & attribution
This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11
Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.
Stable key: col:57PW5. Classification follows source parent identifiers. English common names may vary by region.