siamensis
Siamensis is a Latin adjectival epithet used in the scientific names of organisms to indicate origin from Siam, the historic name for Thailand. In binomial nomenclature, a species epithet typically functions as an adjective that agrees with the gender of the genus, and siamensis is a traditional form used for masculine and feminine genera (neuter forms may vary as siamense in some cases). The epithet does not describe a person or a trait; rather, it points to geographic association with the Siam/Thailand region.
Usage and scope: The epithet siamensis appears across diverse groups in biology, including plants, insects, reptiles,
Context and considerations: Place-based epithets like siamensis are common in taxonomy and help document geographic provenance.
Related terms: Similar regional epithets include indica (from India), chinensis (from China), and malaysiensis (from Malaysia),