The Species Black List
Tantilla triseriata
three-lined centipede snake
The three-lined centipede snake (Tantilla triseriata) is known only from three cloud forest areas in southern Mexico (north-central and southeastern Oaxaca).
Status Data Deficient on the IUCN Red List Restriction tier 2, restricted, extent unclear Class Reptilia Realm Neotropical Locality not specified in the source As IUCN records it Tantilla triseriata Smith & Smith, 1951 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