Incilius holdridgei (Taylor, 1952)
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
Holdridge's toad (Incilius holdridgei), formerly Bufo holdridgei, is a species of toad endemic to Costa Rica. In October 2008, it was declared extinct by the International Union for Conservation of Nature because the species had not been seen since 1987, despite years of extensive searches. However, the species was rediscovered in 2010 by a Costa Rican herpetologist, and is now classified as critically endangered. The greatest conservation threat to the species is the presence of chytrid fungus in its habitat.
Wikipedia contributors, Holdridge's toad; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T16:37:59.149114+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Incilius holdridgei (Taylor, 1952)
- Name authority
- (Taylor, 1952)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Amphibia
- Order
- Anura
- Family
- Bufonidae
- Genus
- Incilius
- 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
- familyBufonidae Gray, 1825
- genusIncilius Cope, 1863
- speciesIncilius holdridgei (Taylor, 1952)
Close classified relatives
These entries share the source’s genus, Incilius. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Sonoran Desert ToadIncilius alvarius (Girard in Baird, 1859) | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius aucoinae (O'Neill & Mendelson, 2004) | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius bocourti (Brocchi, 1877) | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius canaliferus (Cope, 1877) | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius coniferus (Cope, 1862) | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius cristatus (Wiegmann, 1833) | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius epioticus (Cope, 1875) | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius gemmifer (Taylor, 1940) | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius karenlipsae Mendelson & Mulcahy, 2010 | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius leucomyos (McCranie & Wilson, 2000) | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius luetkenii (Boulenger, 1891) | BufonidaeChordata | Accepted speciesRecorded extant |
| Incilius macrocristatus (Firschein & Smith, 1957) | BufonidaeChordata | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Ollotis holdridgei (Taylor, 1952) (Taylor, 1952) | synonym |
| Bufo holdridgei Taylor, 1952 Taylor, 1952 | synonym |
| Cranopsis holdridgei (Taylor, 1952) (Taylor, 1952) | 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=773574 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:3PLCK. Classification follows source parent identifiers. English common names may vary by region.