Engystomops freibergi (Donoso-Barros, 1969)
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.
Engystomops freibergi in Acre, Brazil. Photo by Henrique Nogueira. Original iNaturalist observation here: https://www.inaturalist.org/observations/186192108
Henrique Nogueira · CC BY 4.0 · Image sourceProvider-generated thumbnail requested at 800 pixels; no local editing Local WebP display rendition; resized without cropping.
Open encyclopedia reference
Freiberg's forest toadlet (Engystomops freibergi) is a frog native to the Amazonian Brazil, southeastern Peru, and Amazonian Bolivia. For a while, it was considered to be a synonym of Engystomops petersi, its sibling species, but its species status was resurrected in a study published in 1998. Nevertheless, these two species have also been mixed in later studies, and there are records from the Guianas that have not yet been allocated to either species. Divergence of these two species seems to have been driven by behavioural isolation related to male call characteristics more than geographic isolation.
Wikipedia contributors, Engystomops freibergi; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T16:07:33.172283+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Engystomops freibergi (Donoso-Barros, 1969)
- Name authority
- (Donoso-Barros, 1969)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Amphibia
- Order
- Anura
- Family
- Leptodactylidae
- Genus
- Engystomops
- 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
- familyLeptodactylidae Werner, 1896
- subfamilyLeiuperinae Bonaparte, 1850
- genusEngystomops Jiménez de la Espada, 1872
- speciesEngystomops freibergi (Donoso-Barros, 1969)
Close classified relatives
These entries share the source’s genus, Engystomops. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Engystomops pustulatus (Shreve, 1941) | LeptodactylidaeChordata | Accepted speciesRecorded extant |
| Engystomops randi (Ron, Cannatella & Coloma, 2004) | LeptodactylidaeChordata | Accepted speciesRecorded extant |
| Engystomops montubio (Ron, Cannatella & Coloma, 2004) | LeptodactylidaeChordata | Accepted speciesRecorded extant |
| Engystomops coloradorum (Cannatella & Duellman, 1984) | LeptodactylidaeChordata | Accepted speciesRecorded extant |
| Engystomops guayaco (Ron, Coloma & Cannatella, 2005) | LeptodactylidaeChordata | Accepted speciesRecorded extant |
| Engystomops petersi Jiménez de la Espada, 1872 | LeptodactylidaeChordata | Accepted speciesRecorded extant |
| Engystomops pustulosus (Cope, 1864) | LeptodactylidaeChordata | Accepted speciesRecorded extant |
| Engystomops puyango Ron, Toral, Rivera & Terán-Valdez, 2010 | LeptodactylidaeChordata | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Eupemphix freibergi Donoso-Barros, 1969 Donoso-Barros, 1969 | synonym |
| Physalaemus freibergi (Donoso-Barros, 1969) (Donoso-Barros, 1969) | 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=774692 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.
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:39TTS. Classification follows source parent identifiers. English common names may vary by region.