IUCN Red List data observations

An unofficial, independent review to support data improvement · IUCN Red List version 2026-1

Names absent from the Catalogue of Life where another name for the taxon is present

Source: IUCN Red List 2026-1 vs Catalogue of Life COL26.7 XR (2026-07-17) · 134 rows

The IUCN names below are absent from the Catalogue of Life: not accepted, not a synonym, and no near spelling either. But each taxon has another IUCN-listed name that does appear in CoL as a synonym. That name is shown per row, with the accepted name CoL gives for it where that link resolves. The chain can end at a name that is not the same taxon, so each row is a lead to check rather than a match.

Why it matters

Searched by accepted name alone, these taxa look absent from the Catalogue of Life; searched through their synonyms, each one surfaces. Where the CoL record resolves to an accepted name, that name may be the same taxon under a different treatment, or the synonymy chain may have crossed to a different taxon; the table cannot tell the two apart.

Suggestion

Check each lead: look up the CoL accepted name where one is shown, or the bare synonym record where none is, and judge whether it is the same taxon. Where it is, listing that accepted name among the assessment's synonyms would let the two catalogues link directly.

The Catalogue of Life crosscheck

Every assessed name is checked against the Catalogue of Life; each difference found is listed on exactly one of the pages below.

PageNamesWhat it lists
Names not found in the Catalogue of Life745The name is absent from CoL: no near spelling, and no other name for the taxon either.
Names with a close Catalogue of Life match799The name is absent from CoL; a near spelling exists in the same genus or epithet.
Names absent from the Catalogue of Life where another name for the taxon is present this page134The name is absent from CoL; another IUCN-listed name for the taxon is there as a synonym.
Species and subspecies treated as synonyms in the Catalogue of Life11,664CoL treats the name as a synonym of an accepted name IUCN does not list.
Higher-rank names treated as synonyms in the Catalogue of Life717A genus or higher name CoL records only as a synonym.
Higher-rank placement differences that look like spelling variants94A higher taxon whose CoL parent name looks like a spelling variant of IUCN's.
Minor naming authority differences9,343Exact name match; the author is spelled differently.
Name pairs where IUCN and the Catalogue of Life differ on which name is accepted2,742Both catalogues hold both names and disagree only on which is accepted.
Higher-rank names placed differently in the Catalogue of Life1,663A higher taxon placed under a genuinely different CoL parent.

By class

197,008 assessments compared. Top classes shown; every row is in the CSV download.

ClassCount
INSECTA58
MAGNOLIOPSIDA19
ACTINOPTERYGII12
REPTILIA10
MAMMALIA8
BIVALVIA5
GASTROPODA4
MALACOSTRACA3
CLITELLATA3
LILIOPSIDA3
POLYPODIOPSIDA2
AMPHIBIA2
AVES2
CEPHALOPODA1
ARACHNIDA1

Preview

IUCN nameRankIUCN statusIUCN yearIUCN synonym in CoLCoL accepted nameCoL entryClassFamilyTaxon idRed ListDetail
Bassanago nielsenispeciesDD2019Pseudoxenomystax nielseniviewACTINOPTERYGIICONGRIDAE103684104viewIUCN also lists Pseudoxenomystax nielseni as a synonym of this taxon; the Catalogue of Life has Pseudoxenomystax nielseni as a synonym but does not link it to an accepted name.
Oryzias luzonensisspeciesEN2021Aplocheilus luzonensisviewACTINOPTERYGIIADRIANICHTHYIDAE162159966viewIUCN also lists Aplocheilus luzonensis as a synonym of this taxon; the Catalogue of Life has Aplocheilus luzonensis as a synonym but does not link it to an accepted name.
Apistogramma steindachnerispeciesLC2025Heterogramma steindachneriviewACTINOPTERYGIICICHLIDAE162752499viewIUCN also lists Heterogramma steindachneri as a synonym of this taxon; the Catalogue of Life has Heterogramma steindachneri as a synonym but does not link it to an accepted name.
Sardinella tawilisspeciesEN2018Harengula tawilisviewACTINOPTERYGIICLUPEIDAE98836352viewIUCN also lists Harengula tawilis as a synonym of this taxon; the Catalogue of Life has Harengula tawilis as a synonym but does not link it to an accepted name.
Labeobarbus gestetnerispeciesDD2018Enteromius gestetneriviewACTINOPTERYGIICYPRINIDAE181985viewIUCN also lists Enteromius gestetneri as a synonym of this taxon; the Catalogue of Life has Enteromius gestetneri as a synonym but does not link it to an accepted name.
Devario horaispeciesEN2010Danio horaiviewACTINOPTERYGIIDANIONIDAE166482viewIUCN also lists Danio horai as a synonym of this taxon; the Catalogue of Life has Danio horai as a synonym but does not link it to an accepted name.
Xenocypris schisturusspeciesDD2026Leuciscus schisturusPseudaspius brandtiiviewACTINOPTERYGIIXENOCYPRIDIDAE213044799viewIUCN also lists Leuciscus schisturus as a synonym of this taxon; the Catalogue of Life holds Leuciscus schisturus as a synonym of Pseudaspius brandtii.
Chasmodes bosquianusspeciesLC2025Blennius bosquianusviewACTINOPTERYGIIBLENNIIDAE47140942viewIUCN also lists Blennius bosquianus as a synonym of this taxon; the Catalogue of Life has Blennius bosquianus as a synonym but does not link it to an accepted name.
Rhabdoblennius nitidusspeciesLC2014Salarias nitidusviewACTINOPTERYGIIBLENNIIDAE48342488viewIUCN also lists Salarias nitidus as a synonym of this taxon; the Catalogue of Life has Salarias nitidus as a synonym but does not link it to an accepted name.
Anampses cuvierspeciesLC2010Anampses evermanniviewACTINOPTERYGIILABRIDAE187758viewIUCN also lists Anampses evermanni as a synonym of this taxon; the Catalogue of Life has Anampses evermanni as a synonym but does not link it to an accepted name.
Corydoras elegansspeciesLC2023Corydoras pestaiviewACTINOPTERYGIICALLICHTHYIDAE49830417viewIUCN also lists Corydoras pestai as a synonym of this taxon; the Catalogue of Life has Corydoras pestai as a synonym but does not link it to an accepted name.
Ptychadena boettgerispeciesDD2026Rana boettgeriviewAMPHIBIAPTYCHADENIDAE88640144viewIUCN also lists Rana boettgeri as a synonym of this taxon; the Catalogue of Life has Rana boettgeri as a synonym but does not link it to an accepted name.
Pseudophilautus oxyrhynchusspeciesEX2020Philautus oxyrhynchusviewAMPHIBIARHACOPHORIDAE58883viewIUCN also lists Philautus oxyrhynchus as a synonym of this taxon; the Catalogue of Life has Philautus oxyrhynchus as a synonym but does not link it to an accepted name.
Dolocosa dolosaspeciesEN2019Leaena dolosaviewARACHNIDALYCOSIDAE65892925viewIUCN also lists Leaena dolosa as a synonym of this taxon; the Catalogue of Life has Leaena dolosa as a synonym but does not link it to an accepted name.
Mirafra somalicaspeciesLC2021Certhilauda somalicaCorypha somalicaviewAVESALAUDIDAE200384015viewIUCN also lists Certhilauda somalica as a synonym of this taxon; the Catalogue of Life holds Certhilauda somalica as a synonym of Corypha somalica.

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