The Species Black List
Sturnira perla
La Perla yellow-shouldered bat
The La Perla yellow-shouldered bat (Sturnira perla) is known only from a small area of northwestern Ecuador, where it is threatened by loss of habitat.
Status Data Deficient on the IUCN Red List Restriction tier 2, restricted, extent unclear Class Mammalia Realm Neotropical Locality not specified in the source As IUCN records it Sturnira perla Jarrin & Kunz, 2011 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