The Species Black List
Callulops marmoratus
Crater Mountains callulops frog
The Crater Mountains callulops frog (Callulops marmoratus) is known only from specimens collected in the vicinity of the Crater Mountain Biological Station.
Status Data Deficient on the IUCN Red List Restriction tier 2, restricted, extent unclear Class Amphibia Realm Papua-Melanesian Locality not specified in the source As IUCN records it Callulops marmoratus Kraus & Allison, 2003 This species is one of 3,062 in a list of vertebrates the IUCN Red List records as Data Deficient or has never assessed, ranked by how narrowly restricted the published record says they are. The sentence above is the evidence the tier was read from, quoted from Matthew Richardson, Threatened and Recently Extinct Vertebrates of the World (2023).
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Check this species elsewhere: IUCN Red List · GBIF