Research overview: cryptic species within the oncilla complex

Genetic research has revealed that the oncilla comprises more than one species, and this overview reviews this taxonomic complexity. Molecular studies showed that populations long treated as a single species are deeply divergent, leading to the recognition of a separate southern tigrina, and suggested further unresolved structure within the complex. The work also detected hybridization with Geoffroys cat and a complicated evolutionary history. This cryptic diversity has important conservation consequences, since each lineage may face distinct threats and warrant separate assessment and protection. Studying the oncilla complex illustrates how molecular methods continue to uncover hidden species among small cats and underscores the need to define conservation units genetically rather than by appearance alone.