The Species Black List
Ficimia variegata
Tehuantepec hook-nosed snake
The Tehuantepec hook-nosed snake (Ficimia variegata) is confined to a small area of lowland rainforest in southern Mexico on the Isthmus of Tehuantepec (Veracruz and Oaxaca).
Status Data Deficient on the IUCN Red List Restriction tier 2, restricted, extent unclear Class Reptilia Realm Neotropical Locality Isthmus of Tehuantepec As IUCN records it Ficimia variegata (Günther, 1858) 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).
Browse the full Black List · How the ranking is built and validated
Check this species elsewhere: IUCN Red List · GBIF